a-ak a-ok aaaa aaab aaar aaas aaba aabb aabt aaka aaoo aara aaro aars aart aasa aass aast aata aatk aatt abaa abab abak abar abas abat abb- abba abbb abbo abbr abbs abbt aboa abob abok aboo abor abos abot abra abro abrs abs- absa abss abta abts akaa akao akar akas akka akko akok akos akot akr- akra aksa akst aoba aoks aora aorb aors aort aoss arab arak arar aras arat arba arbs arka arko arks aroa arob aroo aror aros arr- arra arrk arro arrr arrs arrt ars- arsa arsk arso arst arta arto artr arts asaa asab asak asao asar asas asat asba asbo aska asko askr asks askt asob asok asor asos asot asra asro asrs assa assk asso assr asss asst asta astb asto astr asts at-t ataa atab atak atar atas atat atbs atka atkt atob atok ator atos atot atra atrk atro atsb atst atta atto attr atts baaa baak baar baas baat baba babb babo babr babs bak- baka bako bakr baks bakt baos bar- bara barb bark baro barr bars bart basa bask baso bass bast bata bato bats batt bbas bbbb bbbs boab boak boar boas boat boba bobb bobo bobs boka boko boks boob book boor boos boot bor- bora bork boro borr bors bort bosa bosk boso boss bost bota botb boto bots bott brab brak brao bras brat brka brkb broa brob brok broo bror bros brot brrr brrs brsb brsr brst bsaa bsas bsat bskt bsos bsra bsts btaa btob btor btrt btss bttb k-os kaaa kaab kaak kaar kaas kaat kaba kabb kabo kabr kaka kakk kako kaks kakt kaoa kaok kaor kaos kara karb kark karo karr kars kart kas- kasa kasb kask kaso kasr kass kast kat- kata katb katk kato katr kats katt kbaa kbab kbak kbar kbas kbat kbba kbbb kbbk kbbo kbbr kbbs kbbt kbkb kbkk kbko kbkr kboa kbob kbok kboo kbos kbot kbra kbrb kbrk kbro kbrt kbsa kbsb kbsk kbso kbsr kbss kbst kbta kbtb kbtk kbto kbtr kbts kbtt kkaa kkar kkat kkba kkbb kkbo kkbr kkbs kkbt kkkk kkoa kkob kkoo kkor kkot kkrb kkrk kkro kkrr kkrs kkrt kksa kksr kkss kkst kktk kkts koab koak koar koas koba kobb kobk kobo kobr kobs koka kokb kokk koko kokr koks koob kook kooo koor koos koot kora korb kork koro korr kors kort kos- kosa kosb koso kosr koss kost kota kotb kotk koto kotr kots kott krab krak krar kras krat krba krbb krbk krbr krbt krka krkk krko krkr krks kroa krob krok kroo kror kros krrb krrk krro krrr krrs krrt krsa krsk krsr krss krst krta krtk krto krtr krts ksab ksak ksar ksas ksat ksba ksbr ksbs kska kskb kskk ksko kskr ksks ksob ksok ksoo ksor ksos ksra ksrb ksro ksrr ksrs ksrt kssa ksso kssr ksss ksst ksta kstb kstk ksto kstr ksts kstt ktaa ktak ktao ktar ktas ktat ktba ktbb ktbr ktbt ktkb ktkk ktko ktkr ktks ktkt ktob ktok ktoo ktor ktot ktrb ktrk ktro ktrr ktrs ktrt ktsa ktso ktsr ktst kttk ktto kttr ktts kttt oaks oara oars oass oast oats obak obas obba obbo obkb obok obor obos obot obra obro obsr obss obst obts okak okas okka okko okok okor okot okra okro oksa okso okta okto ooaa ooak ooba oooo ooos oora oort oosa oost ootb oots orab orak orao orar oras orat orba orbb orbo orbs orka orko oro- orok oror oros orot orra orro orrs orsa orsk orso orta orto orts osak osar osas osat osba osoo osor osos osro ossa ossb osso osta ostr osts otak otar otas otbs oto- otok otoo otor otos otra otro otrs otsa otso otta otto otts raab raak raas raat raba rabb rabk rabo rabs raka rakk rakt raob raok raos rara rarb rark raro rars rasa rask raso rass rast rata ratk rato rats ratt rbbb rbbr rbbs rbss rbst rkos rkss rkts roab roak roar roas roat rob- roba robb robo robs robt roka rokk roko rokr roks roob rook roor roos root rora rork roro rort rosa roso ross rost rota rotk roto rotr rots rott rras rrat rrrr rsaa rsos rssa rsts rtas rtss rtts s-os saab saak saar saas saat saba sabb sabo sabr sabs saka sakb sakk sako saks saor saos sara sark saro sarr sars sart sasa sask saso sass sast sata satb sato satr sats satt sbaa sbar sbas sbbs sbor sbot sbrk sbsa sbst sbtk skab skar skat skor skot skra skrt skss soak soar soas soat soba sobo sobr sobs sobt soka sokk soko sook soor soos soot sora sorb soro sorr sors sort sosa soso soss sost sota sotk soto sots sras sros srta srtr ssaa ssab ssao ssas ssat ssbr ssot ssra ssrs sssa sssb ssss ssta sstb ssts stab stak star stas stat stbs stks stoa stob stok stoo stor stos stot stra strk stro strs stss sttr taa- taar taas taat taba tabb tabo tabs taka takk tako taks takt taoa taor taos tara tarb tark taro tarr tars tart tasa tasb task tasr tass tast tata tatb tato tatr tats tatt tbar tbas tbbs tbrb tbst tbta tkos tkts toab toas toat toba tobo tobs tobt toka toko tooa took toor toos toot tora tork toro torr tors tort tosa tosb tosk toso toss tost tota toto totr tots tott traa trab trak trao tras trat troa troo tros trot trra trst trtr tsaa tsao tsar tsat tsks tsob tsos tssa tssr tsst tsts ttab ttbb ttss tttt