4 letters:
alla, bala, cala, lala, mala, sala, vala, wala

5 letters:
acala, akala, alala, allah, all a, amala, apala, asala, avala, ayala, balah, bcala, bolla, chala, falah, feola, fiala, folla, golla, guala, halah, holla, isola, jaala, jaula, kalah, kaula, koala, kolla, kuala, mawla, mbala, meola, moala, molla, nahla, neola, nuala, ojala, paula, polla, rolla, saala, scala, shala, skala, solah, solla, taula, uvala, walla, yalah, zolla

6 letters:
abolla, adalah, alcala, amaala, ambala, argala, arolla, baalah, bacala, begala, bhalla, butala, cabala, call a, cecala, chawla, cholla, cicala, cigala, diyala, douala, emtala, escala, fall a, fudala, gajala, gopala, hakala, halala, hall a, hawala, homola, impala, inyala, jamala, jumala, kabala, kamala, kapala, kavala, kerala, kosala, kubala, kujala, kunala, lasala, mahlah, makala, manala, masala, matala, mikala, mollah, motala, musala, natala, nevala, oglala, pamala, pekala, perala, potala, qabala, rajala, ramala, rapala, risala, rogala, sabala, sagala, sallah, savala, sigala, swalla, tamala, upsala, vadala, vetala, wallah, wall a, zabala, zavala

7 letters:
aambala, agallah, akwaala, amapala, arreola, baccala, bandala, bangala, basmala, benalla, bengala, cabbala, cantala, challah, chapala, chirala, cipolla, corolla, crayola, depaula, duhsala, dushala, falbala, haapala, handala, harmala, hawqala, iittala, incwala, kabalah, kabbala, kampala, karbala, karjala, karkala, kerbala, lascala, latvala, laucala, lauhala, lingala, machala, magdala, mancala, mangala, marsala, michala, obatala, odwalla, ogalala, ogilala, pakhala, patiala, penkala, pingala, puumala, qabalah, qabbala, rantala, rintala, rogalla, salalah, santala, scybala, seppala, small a, switala, tafolla, tambala, tampala, trikala, uppsala, varkala, vempala, wandala, wangala, wiitala, zappala

8 letters:
abdollah, agartala, amigdala, amygdala, andryala, bergsala, beruwala, cabbalah, catacala, catocala, chaiwala, chandala, chimbala, damballa, digikala, domagala, gemballa, gwizdala, habdalah, halahala, haskalah, hatzalah, havdalah, jalajala, jambhala, japamala, jayamala, jayapala, kaballah, kabbalah, kalevala, karikala, lonavala, mahakala, manobala, niedbala, panchala, pantalla, pendyala, polygala, porkkala, qabbalah, ramallah, ruhollah, samanala, shambala, tirumala, tlaxcala, topiwala, triphala, wirkkala

9 letters:
amygdalae, caracalla, cherthala, dabbawala, dishwalla, dvarapala, exophiala, fionnuala, guastalla, guatamala, guatemala, haleakala, hiro-kala, indiegala, install a, jandhyala, kitulgala, madhubala, matehuala, mathusala, mundamala, nandalala, napierala, piazzolla, sakuntala, sortavala, talegalla, taxiwaala, toquepala, tra-la-la, vidhubala

10 letters:
arunachala, bharatmala, box-wallah, chuckwalla, dharmapala, dharmasala, epathshala, gagaoolala, inshaallah, jazakallah, kurunegala, mccollough, miehikkala, penumbrala, sabarimala, sarcocolla, sassorolla, shakuntala, shashikala, shishupala, thiruvalla

11 letters:
al-zalzalah, bikanervala, chuckawalla, dharamshala, fionnghuala, internshala, juhi chawla, koramangala, lardizabala, makhachkala, nelamangala, paathshaala, paracorolla, rickshawala, seby zavala, tame impala

12 letters:
ashtamangala, ichthyocolla, kapalkundala

13 letters:
bielsko-biala, rodney alcala

14 letters:
fanna-fi-allah, kalpana chawla, pidurutalagala, shuja-ud-daula, siraj-ud-daula

15 letters:
manisha koirala

16 letters:
chevrolet impala

19 letters:
rakesh jhunjhunwala, sonali deraniyagala

20 letters:
capital of guatemala