2 letters:
an

3 letters:
ahn, ann, ban, can, dan, fan, gan, jan, kan, lan, man, nan, pan, ran, san, tan, van, yan, zan

4 letters:
anne, bahn, banh, bann, blan, bran, caen, cahn, cann, chan, clan, cyan, dahn, dann, duan, dyan, fann, flan, fran, gahn, gann, gran, hann, iran, jaan, jahn, jan., jann, kann, klan, lahn, lann, mahn, mann, mcan, phan, plan, pran, rahn, ranh, rann, scan, shan, span, stan, tann, than, tran, vann, whan, yahn, zahn

5 letters:
-stan, 9-man, abca1, abran, alcan, amban, anpan, appin, ascan, aspan, ayran, began, blann, brann, canne, cepan, cspan, cyan-, dauin, deann, decan, dekan, diane, diann, divan, doran, dupin, duran, dyane, e-man, espan, flann, g-man, gapan, glahn, gnann, grahn, hanne, imban, incan, insan, irfan, iscan, ispan, istan, japan, joann, kanne, kapan, klahn, klann, krahn, lacan, lapan, leann, liane, liban, loran, luann, ma'an, macan, manne, mccan, mchan, milan, moran, noman, oisin, panne, papan, pecan, plan-, reman, rodin, ryann, san-x, sanne, sapan, saran, scran, sedan, spane, spann, srdan, stane, stann, styan, sudan, tanne, thanh, tran-, turan, unban, unpin, utran, vanne, x-man, xtran, yuyan, ziran

6 letters:
a-scan, adtran, afghan, alihan, alliin, amscan, amtran, an san, ariane, aztlan, b-scan, banane, batman, beagan, bedpan, begann, bhutan, boivin, bouman, boutin, britan, c-span, caftan, cancan, cannes, cascan, ceylan, chapin, chrzan, citran, cruzan, dbscan, deanne, declan, deehan, dianne, diovan, dizain, dyspan, eliane, endpin, eridan, fanfan, farfan, forman, for an, frypan, furman, gaudin, gaulin, gauvin, gayman, geurin, ghazan, grand-, granne, hanban, harpin, hatpin, he-man, hitman, hpa-an, hyotan, inspan, ivtran, janean, joanne, kaftan, kanban, lappin, letran, lianne, lorfan, louann, loudin, luanne, lucban, luopan, luqman, lyanne, m-bahn, mactan, madman, maupin, mccann, mcfann, mcgann, mcmann, mcshan, merman, moisan, moulin, nanban, no-man, nystan, oilman, oliban, optran, os-tan, osanne, outman, outran, paviin, petain, pfanne, pindan, pitpan, poulin, ramban, rattan, redman, replan, rifain, roisin, roxane, roxann, s-bahn, sanpan, sapsan, savane, sharan, shyjan, sirhan, sistan, sobran, suntan, susann, suzann, t-span, taipan, taqman, tarzan, tenpin, tiepin, tinman, toofan, trans-, tryfan, turfan, tympan, u-bahn, vianne, voisin, wenfan, xu can, zofran

7 letters:
aberfan, adriane, airtran, anaplan, ant-man, ape-man, apnapan, arctanh, arianne, ash-pan, automan, avestan, balasan, beaudin, besaint, bethann, bogyman, bousman, brakpan, brianne, calapan, calspan, can-can, canavan, caravan, cariban, cat-man, catapan, caveman, cezanne, chauvin, claudin, comtran, con-man, contran, con man, coussin, cow man, cwmbran, deadpan, deignan, dextran, diahann, donavan, doorman, duignan, dulcian, dunavan, dustpan, eachann, eat-man, elf-man, end man, ent man, europan, fan-tan, faturan, fayanne, firepan, fishman, flagman, fortran, frogman, fry-pan, gauguin, gauvain, gay man, gosplan, gremban, gugudan, hackman, handpan, harahan, hardpan, headpan, headpin, heptane, hillman, hitscan, hit man, ice-man, icetran, ichiban, inchpin, jalapin, janeane, jazzman, jimeoin, johanne, jourdan, jp ctan, juliane, karavan, khoisan, kinsman, kneepan, kristan, kurzban, ladyman, lawplan, lennane, liliane, lin dan, loriann, louanne, madtran, magadan, mailman, mainpin, maliban, many an, mariann, marplan, marstan, maryann, mayapan, mccahan, mcmahon, milkman, minivan, mortain, mortran, murexan, nastran, newsman, odd-man, old man, one-man, orianne, outspan, overran, pac-man, pan-pan, pelecan, preplan, propfan, puputan, pushpin, ram-man, red man, richman, rokugan, rosanne, roseann, roussin, roxanne, ruthann, saltpan, sandman, savanne, sea fan, seistan, sideman, sigplan, silkman, skidpan, snowman, soloman, solyman, spokane, suanpan, sukeban, susanne, suzanne, swanpan, swimfan, syntran, systran, tacscan, tai-pan, taliban, teleman, terapin, texscan, tin can, torfaen, trans-x, tristan, unsaint, uruapan, vantran, vectran, viviane, vuescan, walkman, with/in, yangban, yes-man, you can, yucatan, zapopan

8 letters:
acaridan, adrianne, ahiravan, albertan, anti-fan, atakapan, auerhahn, awarapan, axle-pin, baybayin, beef man, beer can, berghain, best man, bethanne, billycan, biskupin, bogeyman, boogyman, bosentan, bourquin, brainpan, breadfan, butsudan, callahan, caravane, cave-man, cave man, cheyanne, chieftan, christan, city man, colorman, couchman, crankpin, dagestan, dead-man, deguzman, dragoman, driftpin, drip pan, dynascan, faliscan, farahkan, fibranne, floorman, fractran, frostban, fuel-can, funnyman, furfuran, gachapin, gamesman, georgann, geraniin, gill-man, glassman, gloriane, gulistan, hallasan, handspan, handyman, helmsman, holy man, infoscan, intertan, java man, jerrycan, kadamban, karagane, kekistan, kelantan, kistvaen, kordofan, laufbahn, lausanne, lazistan, lehrplan, leighann, lifespan, lion-man, lisa ann, lorestan, lucianne, luristan, lynchpin, macmahon, makespan, marianne, marsanne, maryanne, mattapan, mega man, melonpan, microman, microvan, milk can, miruthan, mixtecan, moneyman, moss-man, motorman, muristan, murrayin, mygov.in, nanalan', navy man, nuristan, omni-man, overscan, overspan, pakistan, pearlman, pentosan, perlecan, plagscan, poor man, questran, quiktran, quillman, quite an, radioman, rain man, rambotan, registan, rich man, roseanne, ruth-ann, sallyman, san-fran, sang lan, saucepan, scarfpin, scrumban, seremban, showscan, siegbahn, socotran, soda can, solo man, spectran, speedfan, statscan, stew-pan, stolypin, sub-clan, superfan, superman, tallyman, tank man, tatrapan, tholepin, timespan, tragopan, treetran, trimaran, truthahn, turbofan, turcoman, turlupin, ultrafan, underman, underran, vennbahn, wild man, wingspan, wise man, youngman, zemlyane

9 letters:
abram-man, adenoscan, akwesasne, anchorman, arabistan, athelstan, attacapan, attic fan, bactroban, bakhtaran, baltistan, bantustan, beardyman, black man, blind man, blutfahne, boogeyman, brainscan, breastpin, brindaban, candlepin, carryanne, catamaran, chaliapin, chinkapin, chipewyan, clergyman, cooperman, daghestan, dantescan, dardistan, decoy-man, dondestan, donkeyman, eledoisin, eye-saint, fancy man, farsistan, faze clan, feral man, ferdinand, fisherman, floorplan, front man, game plan, gell-mann, genus pan, giant-man, greenspan, green man, guardsman, harmattan, heartscan, hindostan, hindustan, hired man, hou yifan, hydro-man, hyperscan, illinoian, karkadann, kazakstan, kellyanne, khalistan, khuzestan, khuzistan, kronospan, kurdestan, kurdistan, kuvera.in, kyrgystan, less than, lewis tan, life-span, louisiane, macho-man, makabayan, mangostan, manimaran, meprospan, middleman, midgetman, minuteman, miri-clan, molluscan, montespan, more than, multi-man, multiscan, nerdistan, nitrospan, ocallahan, parthiban, party man, patrolman, patty-pan, pesantran, peter pan, photoscan, picketpin, pivot man, point man, protistan, repairman, roussanne, ruth-anne, sacristan, salaryman, sauce-pan, schwanpan, scroll.in, seungsahn, shwan-pan, silverman, skinnyman, socketcan, soundscan, spray can, stilt-man, straw-man, straw man, strongman, stunt man, superscan, tajikstan, tatarstan, teleostan, thiofuran, tien shan, time plan, toussaint, trans man, trash can, tryptofan, turkestan, turkistan, underscan, vectorman, vientiane, white man, worldspan, young man, zebra-man

10 letters:
achterbahn, aethelstan, afganistan, age of man, athapascan, backup man, barrow-man, benzofuran, bimaristan, bratpfanne, carbofuran, career man, cat-harpin, chinquapin, chippewyan, coffee can, common man, constantan, corner man, counterman, d.gray-man, dabigatran, draguignan, family man, fellow-man, firing-pin, floor plan, frying-pan, frying pan, gemma chan, georgianne, ha-erh-pin, hackneyman, haricharan, heidenhain, holdup man, hollow man, journeyman, kabulistan, kafiristan, kalicharan, kazachstan, kazakhstan, kazakistan, kirgizstan, kolaigaran, kyrgyzstan, man-to-man, manikuttan, manitoulin, mazandaran, mcgranahan, method man, modern man, moving van, muffin man, naamkarann, nitrofuran, nurseryman, o'callahan, other than, panganiban, peking man, police van, psycho-man, quarry-man, quatorzain, reeperbahn, romanistan, safety-pin, scintiscan, scott hann, serviceman, shandrydan, spheniscan, sports fan, straenbahn, tabaristan, tajikistan, thysanuran, transocean, tv newsman, tweezerman, usbekistan, uzbekistan, waziristan, weatherman, xylophilan, yellow man, zabulistan

11 letters:
abraham-man, absurdistan, afghanistan, assemblyman, balochistan, baluchistan, battle plan, better than, burning man, businessman, college man, company man, conjure man, counterplan, deewaanapan, dinotefuran, exhaust fan, fall of man, florida man, garbage can, garbage man, gorilla-man, ground plan, hatchet man, heliotropin, isle of man, jaan-e-mann, jaycee chan, kirghizstan, kirgisistan, ladies' man, leading man, leslie mann, life-of-man, londonistan, lookout man, luggage van, married man, master plan, medical man, miracle man, moghulistan, noor-ul-ain, ottakkomban, outdoor man, padmanabhan, paralititan, paul mcgann, railway man, raisin bran, rewrite man, rolling-pin, saraikistan, secret plan, section man, stewing pan, survivorman, tadjikistan, thoroughpin, tokharistan, travel plan, tunganistan, utility man, uyghuristan, warming-pan, warming pan, wealthy man, weatherscan, working man, zahnradbahn

12 letters:
afghanis-tan, al-khayzuran, alluvial fan, artilleryman, a single man, calendar man, chainsaw man, chinese shan, crisping-pin, delivery van, dibenzofuran, divorced man, dripping pan, electric fan, elevator man, enlisted man, french sudan, india.gov.in, infinity-man, jean chauvin, jennifer pan, kathryn hahn, ku klux klan, manfred mann, medicine man, mike maignan, military man, mountain man, newspaperman, pashtunistan, pension plan, pichaikkaran, piltdown man, preacher man, property man, railroad man, regionalbahn, sea of japan, sporting man, straight man, tadzhikistan, talibanistan, turkmenistan, villeurbanne, watering can, wrath of man, wu-tang clan, yang junxuan

13 letters:
aattanayagann, american plan, a serious man, bank of japan, bashkortostan, bernie taupin, black-and-tan, black and tan, breitspurbahn, derek chauvin, east pakistan, erin kellyman, european plan, ex-serviceman, flag of japan, gurren lagann, madeline kahn, one-punch man, passenger van, phospholamban, polka-dot man, publicity man, rhodesian man, schlitterbahn, she's the man, spic-and-span, the music man, the omega man, the third man, unmarried man, vigilance man, vince mcmahon, vitruvian man, west pakistan

14 letters:
attention span, broth of a man, confidence man, customer's man, format-fortran, government man, heidelberg man, karakalpakstan, mechanical man, minatogawa man, names of japan, priscilla chan, rag'n'bone man, remittance man, sebastian stan, spick-and-span, the king's man, worship of man

15 letters:
big businessman, commission plan, double saucepan, empire of japan, fingerprint man, gingerbread man, karakattakkaran, maintenance man, neanderthal man, renaissance man, retirement plan, tetrahydrofuran

16 letters:
border patrolman, capital of japan, capital of sudan, economy of japan, emperor of japan, gilgit-baltistan, history of japan, installment plan, minar-e-pakistan, organization man, saurabh raj jain, wong choong hann

17 letters:
nishan-e-pakistan, religion in japan, small businessman, sverigetopplistan

18 letters:
abominable snowman, architectural plan, cessna 208 caravan, education in japan, gerold of lausanne, surrender of japan

19 letters:
capital of pakistan, catch me if you can, economy of pakistan, electric frying pan, occupation of japan, polytetrahydrofuran, stock purchase plan, the lady in the van

20 letters:
pornography in japan, prefectures of japan, public relations man

21 letters:
capital of tajikistan, demographics of japan, president of pakistan, republic of the sudan, world's strongest man

22 letters:
capital of afghanistan, history of afghanistan, modified american plan

23 letters:
capital of turkmenistan, imperial house of japan, list of cities in japan, prime minister of japan

24 letters:
list of islands of japan

25 letters:
mongol invasions of japan, so i married the anti-fan, tehrik-i-taliban pakistan

26 letters:
covid-19 pandemic in japan, the six million dollar man

28 letters:
the new adventures of he-man

29 letters:
employee stock ownership plan, list of chapters in the quran

5 letters:
haydn, ripen, titan, widen

6 letters:
leyden, whiten, triton, leiden

7 letters:
tighten, lighten

8 letters:
brighton, brighten, heighten, poseidon, frighten

9 letters:
enlighten

10 letters:
psilocybin