a-ak a-ii aaaa aaab aaac aaai aaar aaas aaba aabb aabc aabi aaca aacb aacc aaci aack aacr aacs aaib aaic aaii aais aaka aara aarc aari aars aasa aasc aasi aass abaa abab abac abai abak abar abas abb- abba abbb abbi abbr abbs abca abcb abcc abci abcr abcs abia abib abic abir abis abra abrc abri abrs abs- absa absi abss acaa acab acac acai acar acas acba acca accc acci accs aci- acia acic acir acis acks acr- acra acrc acri acrr acrs acsa acsc acsi acss aiai aias aiba aica aicc aicr aics aiia aiib aiic aiir aika aiki aiks aira airi airs aisa aisb aisi aisk aisr akaa akai akar akas akca akia akik akir akis akka akki akr- akra aksa aksi arab arac arai arak arar aras arba arbi arbs arc- arca arci arcs aria arib arii arik aris arka arki arks arr- arra arrc arri arrk arrr arrs ars- arsa arsc arsi arsk asaa asab asac asai asak asar asas asba asc- asca ascb ascc asci ascr asia asic asii asik asir asis aska aski askr asks asra asrc asrs assa assc assi assk assr asss ba-i baaa baak baar baas baba babb babi babr babs bac- baca bacc baci back bacs baia baib baic baik bair bais bak- baka baki bakr baks bar- bara barb barc bari bark barr bars basa basc basi bask bass bbas bbbb bbbs bbci bbrc bcaa bcar bcas bcbc bcbs bcca bccc bcci bccs bcia bcis bcra bcrs bcsa bcsc bcss biak biar bias biba bibb bibi bibs bica bicc bici bick bics biis bira birb biri birk birr birs bis- bisa bisc bisk biss brab brac brai brak bras brca brcb bria bric brik bris brka brkb brrr brrs brsb brsr bsaa bsac bsas bsci bscs bsic bsra bssc caaa caab caac caas caba cabi cabs cac- caca cacc caci cack cacr caia caib caic caik cair cais caka cara carb carc cari cark carr cars casa casb casc casi cask casr cass cbac cbar cbbc cbbs cbca cbcc cbcr cbcs cbia cbir cbka cbkr cbsa cbsc cbsi ccaa ccab ccac ccai ccar ccas ccba ccbc ccca cccb cccc ccci cccs ccic ccii ccir ccis ccra ccrc ccri ccrs ccsa ccsi ccss ciaa ciak ciar cias ciba cibc cibi cica cicc cici cicr cics ciia ciii ciis cika cikr cira cirb circ ciri cirk cirr cirs cis- cisa cisc cisk cisr ciss ckac ckbc ckbi ckck ckcs ckrc cksa cksb crab crac crai crar cras crbc crca crcc crcr cria crib cric crik cris crkc crsa crss csaa csab csac csak csar csas cscb cscc csci cscr cscs csia csib csik csir csis cska csks csra csrc csrs cssa cssr iaaa iaac iaai iaas iaba iaca iacc iacr iacs iaia iais iara iarc iars iasa iasc iasi iask iasr ibac ibar ibas ibca ibcs ibia ibis ibra ibrc ibri ibsa ibss icaa icab icac icai icar icas icbc icbs icca iccb iccc icci iccr iccs icis icks icra icrc icrr icrs icsa icsb icsc icsi icsr icss iiac iias iica iiii iiis iira iirc iirs iisc iisi iisr ikar ikki ikra ikri irac irai irak irar iras irca ircc ircs iri- iria iric iris irka irki irks irra irrc irri irrs irsa is-a isac isai isak isar isas isba isca iscc isci iscr iscs isia isic isis iska isra isri issa issc issi issr isss k-ci kaaa kaab kaai kaak kaar kaas kaba kabb kabc kabi kabr kacb kacc kaci kacs kaia kaib kaic kaii kaik kair kais kaka kakc kaki kakk kaks kara karb kari kark karr kars kas- kasa kasb kasc kasi kask kasr kass kbaa kbab kbac kbai kbak kbar kbas kbba kbbb kbbc kbbi kbbk kbbr kbbs kbca kbcb kbci kbck kbcr kbcs kbia kbib kbic kbik kbis kbkb kbkk kbkr kbra kbrb kbrc kbri kbrk kbsa kbsb kbsi kbsk kbsr kbss kcaa kcab kcac kcai kcar kcas kcba kcbc kcbi kcbk kcbr kcbs kcca kccb kccc kcci kcck kccr kcic kcii kcir kcis kckc kckk kckr kcrc kcri kcrr kcrs kcsa kcsb kcsc kcsi kcsr kcss kiab kiac kiai kiar kias kiba kibb kibc kibi kibr kibs kica kicb kicc kick kicr kics kiia kiic kiii kiik kiis kika kikc kiki kikk kikr kira kirb kirc kiri kirk kirr kirs kisa kisc kisi kisk kisr kiss kkaa kkac kkai kkar kkba kkbb kkbi kkbr kkbs kkcb kkci kkck kkcr kkcs kkia kkic kkik kkkk kkrb kkrc kkrk kkrr kkrs kksa kksi kksr kkss krab krac krai krak krar kras krba krbb krbi krbk krbr krca krcb krcc krci krcs kria krib krik kris krka krkc krki krkk krkr krks krrb krrc krri krrk krrr krrs krsa krsc krsk krsr krss ksab ksac ksak ksar ksas ksba ksbc ksbi ksbr ksbs ksca kscb ksci ksck kscr kscs ksib ksii ksik ksir ksis kska kskb kskk kskr ksks ksra ksrb ksrr ksrs kssa kssi kssr ksss raab raak raas raba rabb rabi rabk rabs rac- raca racc raci rack racs raia raic raii raik rair rais raka raki rakk rara rarb rari rark rars rasa rasc rasi rask rass rbbb rbbr rbbs rbis rbss rcac rcas rcbc rccb rccc rccs rcic rcis rcsa rcsc rcsi rcss riaa riab riai riak rias rib- riba ribs rica ricc rick rics riia riis rika riki rikk riri rirs risa risc risi risk riss rkss rras rrrr rsaa rsai rsbi rscc rscs rsis rssa s-ib s-ic s-ii sa-c saab saac saak saar saas saba sabb sabc sabi sabr sabs saca sacc saci sack sacr sacs saia saic saik sair sais saka sakb saki sakk saks sara sarc sari sark sarr sars sasa sasc sasi sask sass sbaa sbac sbai sbar sbas sbbs sbca sbcc sbcs sbia sbic sbrk sbsa sbsi scaa scab scac scai scak scar scas scba scbi sccc sccs sci- scia scic scir scis sck- scr- scra scrc scri scrs scsa scsc scsi scsr siaa siab siac siai siak sias siba sibc sibi sibs