a-ak a-do a-ok aaaa aaab aaad aaas aaba aabb aabd aada aads aaka aaoo aasa aasd aass abaa abab abad abak abas abb- abba abbb abbo abbs abda abdo aboa abob abod abok aboo abos abs- absa absd abss abza adaa adab adad adak adao adas adba adda addd addo adds adob adod adok adoo ados adsa adso adss adzs akaa akao akas akka akko akok akos aksa aoba aoks aosd aoss asaa asab asad asak asao asas asba asbo asda asdo asds aska asko asks asob asod asok asos assa assd assk asso asss aza- azab azad azas azaz azo- azoo azos azza azzo baaa baad baak baas baaz baba babb babo babs bada badb badd bado bads bak- baka bako baks baos basa bask baso bass baza bazo bbad bbas bbbb bbbs bbdd bbdo bdos bdsd boab boad boak boas boaz boba bobb bobo bobs boda bodb bodo bods boka boko boks boob bood book boos booz bosa bosk boso boss boza bozo bsaa bsas bsbd bsod bsos bssd bzzz d-bo daab daad daas daba dabb dabo dabs dada dado dads daka dako daks daos dasa dasb dasd dask dass dazs dazz dbas dbos dbsa dbss dddd ddss dkba doab doak doas doba dobb dobs dod- doda dodd dodo dods doka doko doob dood dook doos dosa dosk doso doss doza dozo dsba dsda dsoa dsos dssa dzas dzbb dzbs dzok dzos dzso k-os kaaa kaab kaak kaas kaba kabb kabd kabo kabz kad- kada kadd kado kads kadz kaka kakk kako kaks kaoa kaok kaos kas- kasa kasb kask kaso kass kaza kazd kazo kazz kbaa kbab kbad kbak kbas kbaz kbba kbbb kbbd kbbk kbbo kbbs kbbz kbdb kbdo kbds kbdz kbkb kbkk kbko kbkz kboa kbob kbod kbok kboo kbos kboz kbsa kbsb kbsk kbso kbss kbsz kbzd kbzo kbzs kbzz kdaa kdab kdad kdak kdao kdaz kdbb kdbs kddb kddd kddk kdka kdkb kdkd kdkk kdko kdok kdsd kdsk kdss kdza kdzz kkaa kkba kkbb kkbd kkbo kkbs kkbz kkda kkdd kkdo kkdz kkkk kkoa kkob kkoo kkoz kksa kksd kkss kkzz koab koak koas koaz koba kobb kobk kobo kobs koda kodk kodo kods kodz koka kokb kokk koko koks kokz koob kook kooo koos kooz kos- kosa kosb kosd koso koss kosz koza kozb kozk kozo ksab ksak ksas ksaz ksba ksbs ksbz ksdk ksds ksdz kska kskb kskd kskk ksko ksks kskz ksob ksok ksoo ksos kssa ksso ksss kssz kzaz kzbb kzbd kzbk kzbs kzbz kzks kzkz kzoo kzoz kzsb kzsd kzza kzzb kzzd kzzk kzzo kzzs kzzz oaks oass obad obak obas obba obbo obkb obok obos obsd obss odas odbo odda oddd odds odoo odos odso okak okas okaz okka okko okok oksa okso ooaa ooak ooba ooda oooo ooos oosa osak osas osba osoo osos ossa ossb ossd osso ozd s-os saab saad saak saas saaz saba sabb sabo sabs sabz sada sadb sadd sado sads sadz saka sakb sakk sako saks saos sasa sasd sask saso sass saza sbaa sbas sbbs sbds sbsa sbsd sdak sdba sdds sdss skab skad skaz sksd skss soad soak soas soaz soba sobo sobs soda sodd sodo sods soka sokk soko sood sook soos sosa soso soss soz- soza ssaa ssab ssao ssas ssdd sssa sssb ssss szob szod szss zaba zabo zada zaka zakk zaks zask zaza zobo zoda zodd zoo- zook zoos zoso zoss zoza zozo zsss zzzs zzzz