3 letters:
erk, irk

4 letters:
berk, birk, burk, derk, dirk, erck, gerk, herk, jerk, kirk, kurk, lurk, merc, merk, murk, perc, perk, purk, sirk, turk, werk, work, zirk

5 letters:
agurk, awork, berch, berck, berke, beurk, birke, burck, burke, cearc, chirk, clerc, clerk, dirck, ferch, gerke, gurke, iwork, kerch, kirch, kirke, klerk, kwirk, lerch, merch, merck, merke, murch, plurk, querk, quirk, sherk, shirk, smerk, smirk, sterk, stirk, sturc, sturk, turck, twerk, twirk, werke, yerke

6 letters:
bezirk, bjerke, bourke, bywork, cirque, clercq, delurk, inwork, jerque, kirche, mcgurk, merckx, pearch, quirke, rework, unwork, upwork, wework

7 letters:
allwork, artwork, ataturk, at work, berserk, bezirke, cobwork, cutwork, daywork, declerk, deklerk, do work, freearc, hawberk, lacwork, lapwork, leclerc, legwork, mcguirk, network, nonwork, notwork, nymburk, ohmwork, outwork, pinwork, ragwork, tinwork, waxwork, webwork, wetwork

8 letters:
beadwork, bodywork, bookwork, buhlwork, busywork, canework, casework, coldwork, cribwork, declerck, declercq, deskwork, ductwork, facework, feltwork, firework, flatwork, fluework, footwork, formwork, fretwork, goldwork, hackwork, handwork, hardwork, headwork, homework, hornwork, hvitserk, ironwork, kneejerk, knitwork, knotwork, lacework, lampwork, lathwork, leadwork, lifework, linkwork, magouirk, makework, meshwork, net-work, networkx, nyetwork, openwork, overwork, pipework, rackwork, reedwork, ringwork, roadwork, rockwork, rss rerc, salework, scutwork, seatwork, shitwork, slopwork, soilwork, studwork, talmberk, taskwork, teamwork, telework, tilework, timework, tut-work, wallwork, westwork, wirework, woodwork, woolwork, yardwork

9 letters:
afterwork, blackwork, bloodwork, boulework, brainwork, brushwork, catchwork, chainwork, checkwork, classwork, clockwork, coachwork, cold-work, craftwork, crownwork, danevirke, declerque, drawnwork, dreamwork, e.leclerc, earthwork, falsework, fancywork, fieldwork, flushwork, framework, frostwork, glasswork, grillwork, guesswork, hand-work, handiwork, handywork, heartwork, housework, interwork, knee-jerk, knee jerk, make-work, metalwork, nightwork, paintwork, panelwork, paperwork, patchwork, piecework, pitchwork, pokerwork, presswork, quickwork, quillwork, roughwork, shellwork, shiftwork, siegework, soda jerk, spadework, spellwork, steelwork, stickwork, stockwork, stonework, strapwork, t-network, trunkwork, underwork, voicework, waterwork, wheelwork

10 letters:
agrokomerc, bank clerk, basketwork, bobbinwork, breastwork, bridgework, brightwork, camerawork, cofferwork, coursework, crewelwork, dannevirke, desk clerk, donkeywork, enamelwork, field work, file clerk, grand turk, groundwork, hurdlework, mail clerk, masterwork, needlework, poker-work, room clerk, rubblework, salesclerk, schoolwork, scrollwork, semicirque, shop clerk, silverwork, subnetwork, timberwork, town clerk, tx network, wickerwork, wonderwork, young turk

11 letters:
breast-work, cabinetwork, checkerwork, counterwork, funderburke, grotto-work, hotel clerk, journeywork, lacquerwork, latticework, leatherwork, nanonetwork, out of work, passagework, plasterwork, ptilocerque, put to work, scratchwork, social work, tally clerk, trelliswork, trestlework, usa network, wwe network

12 letters:
body of work, filing clerk, internetwork, lattice-work, line of work, nine network, postal clerk, supernetwork, welfare work

13 letters:
booking clerk, dramatic work, literary work, piece of work, proof-of-work, seven network

14 letters:
.net framework, arthur leclerc, bead and quirk, clean and jerk, detective work, microframework, permit-to-work, reference work, shipping clerk

15 letters:
bitcoin network, charles leclerc, electrical work, missionary work, undercover work

16 letters:
computer network, hotel desk clerk, maid-of-all-work, monsters at work, regierungsbezirk, spring framework

17 letters:
not safe for work, wayde van niekerk, wide area network

18 letters:
japan news network, local area network, software framework, the social network

22 letters:
communications network

23 letters:
virtual private network

24 letters:
one america news network, recurrent neural network

25 letters:
sint-petrus-en-pauluskerk

28 letters:
convolutional neural network