a-ak a-ok aaaa aaab aaar aaas aaba aabb aaka aaoo aara aaro aars aasa aass abaa abab abak abar abas abb- abba abbb abbo abbr abbs aboa abob abok aboo abor abos abra abro abrs abs- absa abss abza akaa akao akar akas akka akko akok akos akr- akra aksa aoba aoks aora aorb aors aoss arab arak arar aras arba arbs arka arko arks aroa arob aroo aror aros aroz arr- arra arrk arro arrr arrs ars- arsa arsk arso arza arzo asaa asab asak asao asar asas asba asbo aska asko askr asks asob asok asor asos asra asro asrs assa assk asso assr asss aza- azab azar azas azaz azo- azoo azor azos azra azza azzo baaa baak baar baas baaz baba babb babo babr babs bak- baka bako bakr baks baos bar- bara barb bark baro barr bars barz basa bask baso bass baza bazo bbas bbbb bbbs boab boak boar boas boaz boba bobb bobo bobs boka boko boks boob book boor boos booz bor- bora bork boro borr bors borz bosa bosk boso boss boza bozo brab brak brao bras braz brka brkb broa brob brok broo bror bros broz brrr brrs brsb brsr brza bsaa bsas bsos bsra bzrk bzzz k-os kaaa kaab kaak kaar kaas kaba kabb kabo kabr kabz kaka kakk kako kaks kaoa kaok kaor kaos kara karb kark karo karr kars karz kas- kasa kasb kask kaso kasr kass kaza kazo kazr kazz kbaa kbab kbak kbar kbas kbaz kbba kbbb kbbk kbbo kbbr kbbs kbbz kbkb kbkk kbko kbkr kbkz kboa kbob kbok kboo kbos kboz kbra kbrb kbrk kbro kbrz kbsa kbsb kbsk kbso kbsr kbss kbsz kbzo kbzs kbzz kkaa kkar kkba kkbb kkbo kkbr kkbs kkbz kkkk kkoa kkob kkoo kkor kkoz kkrb kkrk kkro kkrr kkrs kkrz kksa kksr kkss kkzz koab koak koar koas koaz koba kobb kobk kobo kobr kobs koka kokb kokk koko kokr koks kokz koob kook kooo koor koos kooz kora korb kork koro korr kors kos- kosa kosb koso kosr koss kosz koza kozb kozk kozo kozr krab krak krar kras kraz krba krbb krbk krbr krbz krka krkk krko krkr krks krkz kroa krob krok kroo kror kros kroz krrb krrk krro krrr krrs krrz krsa krsk krsr krss krza krzk krzr krzs krzz ksab ksak ksar ksas ksaz ksba ksbr ksbs ksbz kska kskb kskk ksko kskr ksks kskz ksob ksok ksoo ksor ksos ksra ksrb ksro ksrr ksrs ksrz kssa ksso kssr ksss kssz kszr kzar kzaz kzbb kzbk kzbr kzbs kzbz kzkr kzks kzkz kzoo kzor kzoz kzrb kzrk kzro kzrr kzrs kzrz kzsb kzza kzzb kzzk kzzo kzzr kzzs kzzz oaks oara oars oass obak obas obba obbo obkb obok obor obos obra obro obsr obss okak okas okaz okka okko okok okor okra okro oksa okso ooaa ooak ooba oooo ooos oora oosa orab orak orao orar oras orba orbb orbo orbs orka orko oro- orok oror oros oroz orra orro orrs orsa orsk orso orzk orzo osak osar osas osba osoo osor osos osro ossa ossb osso ozar raab raak raas raaz raba rabb rabk rabo rabs raka rakk raob raok raos rara rarb rark raro rars rarz rasa rask raso rass raza razo razr razz rbbb rbbr rbbs rbss rkos rkss roab roak roar roas rob- roba robb robo robs roka rokk roko rokr roks roob rook roor roos rooz rora rork roro rosa roso ross roza rozz rras rrrr rsaa rsos rssa rzab rzka s-os saab saak saar saas saaz saba sabb sabo sabr sabs sabz saka sakb sakk sako saks saor saos sara sark saro sarr sars sarz sasa sask saso sass saza sbaa sbar sbas sbbs sbor sbrk sbsa skab skar skaz skor skra skss soak soar soas soaz soba sobo sobr sobs soka sokk soko sook soor soos sora sorb soro sorr sors sosa soso soss soz- soza sras sros ssaa ssab ssao ssas ssbr ssra ssrs sssa sssb ssss szar szob szss z-ro zaar zaba zabo zabr zaka zakk zaks zara zarb zark zaro zarr zask zaza zbar zoar zobo zoo- zook zoos zora zorb zork zoro zors zoso zoss zoza zozo zsss zzzs zzzz