-ic a-a a-b a-c a-i a-t aaa aab aac aai aak aar aat ab- aba abb abc abi abk abr abt ac- aca acb acc aci ack acr act ai- aia aib aic aii aik air ait aka akb akc aki akk akr ar- ara arb arc ari ark arr art at- ata atb atc ati atr att baa bab bac bai bak bar bat bba bbb bbc bbi bbk bbr bbt bca bcb bcc bci bck bcr bct bi- bia bib bic bii bik bir bit bka bkb bkc bkk bkr bkt bra brb bri brk brr brt bta btb btc bti btk btr btt c-- caa cab cac cai cak car cat cba cbb cbc cbi cbk cbr cbt cca ccb ccc cci cck ccr cct ci- cia cib cic cii cik cir cit cka ckb ckc cki ckt cra crb crc cri crk crr crt cta ctb ctc cti ctk ctr ctt ia- iaa iab iac iai iar iat iba ibb ibc ibi ibk ibr ibt ica icb icc ici ick icr ict iia iib iic iii iir iit ika ikb ikc iki ikk ikr ikt ir- ira irb irc iri irk irr irt ita itb itc iti itk itt k-t ka- kaa kab kac kai kak kar kat kba kbb kbc kbi kbk kbr kca kcb kcc kci kck kcr kct kia kib kic kii kik kir kit kkb kkc kki kkk kkr kkt kra krc kri krk krr krt kta ktb ktc ktk ktr ktt ra- raa rab rac rai rak rar rat rba rbb rbc rbi rbk rbr rbt rca rcb rcc rci rcr rct ria rib ric rii rik rir rit rkb rkc rkk rkt rra rrb rrc rri rrk rrr rrt rta rtb rtc rti rtk rtr rtt taa tab tac tai tak tar tat tba tbb tbc tbi tbk tbr tbt tca tcb tcc tci tck tcr tct tia tib tic tii tik tir tit tka tkb tkc tkk tkr tkt tra trb trc tri trk trr trt tta ttb ttc tti ttk ttr ttt

a-ak a-ii aaaa aaab aaac aaai aaar aaba aabb aabc aabi aabt aaca aacb aacc aaci aack aacr aact aaib aaic aaii aaka aara aarc aari aart aata aatc aatk aatt abaa abab abac abai abak abar abat abb- abba abbb abbi abbr abbt abca abcb abcc abci abcr abct abia abib abic abir abit abra abrc abri abta ac-t acaa acab acac acai acar acat acba acca accc acci acct aci- acia acic acir acr- acra acrc acri acrr acta actc acti actt aiai aiba aica aicc aicr aiia aiib aiic aiir aika aiki aira airi airt aita aiti aitr aitt akaa akai akar akca akia akik akir akka akki akr- akra arab arac arai arak arar arat arba arbi arc- arca arci arct aria arib arii arik arit arka arki arr- arra arrc arri arrk arrr arrt arta artc arti artr at-t ataa atab atac atai atak atar atat atca atcc atck atcr atia atic atik atit atka atkt atra atrc atri atrk atta atti attr ba-i baaa baak baar baat baba babb babi babr bac- baca bacc baci back bact baia baib baic baik bair bait bak- baka baki bakr bakt bar- bara barb barc bari bark barr bart bata batc bati batt bbbb bbci bbrc bcaa bcar bcat bcbc bcca bccc bcci bcia bcit bcra bctc biak biar biat biba bibb bibi bica bicc bici bick bira birb biri birk birr birt bita bitc bitt brab brac brai brak brat brca brcb bria bric brik brit brka brkb brrr brtc btaa btcc btrc btrt bttb caaa caab caac caat caba cabi cac- caca cacc caci cack cacr caia caib caic caik cair cait caka cara carb carc cari cark carr cart cat- cata catb catc cati catt cbac cbar cbat cbbc cbca cbcc cbcr cbct cbia cbir cbit cbka cbkr cbrt cbta cbtc ccaa ccab ccac ccai ccar ccat ccba ccbc ccca cccb cccc ccci ccic ccii ccir ccra ccrc ccri ccrt cctb cctc cctt ciaa ciak ciar ciat ciba cibc cibi cica cicc cici cicr cict ciia ciii ciit cika cikr cira cirb circ ciri cirk cirr cirt cita citb citi citt ckac ckat ckbc ckbi ckck ckrc cktb crab crac crai crar crat crbc crca crcc crcr cria crib cric crik crit crkc crrt crtc ctab ctba ctbi ctca ctia ctic ctrc ctta iaaa iaac iaai iaat iaba iaca iacc iacr iact iaia iara iarc iart iata iatc iati ibac ibar ibat ibca ibia ibra ibrc ibri ibtb ibtc icaa icab icac icai icar icat icbc icca iccb iccc icci iccr icct icra icrc icrr icrt icta iiac iica iiii iiit iira iirc iita iitr iitt ikar ikat ikki ikra ikri irac irai irak irar irca ircc iri- iria iric irka irki irra irrc irri irta irti itaa itac itai itak itar itat itia itic itra itri itta k-ci kaaa kaab kaai kaak kaar kaat kaba kabb kabc kabi kabr kacb kacc kaci kact kaia kaib kaic kaii kaik kair kait kaka kakc kaki kakk kakt kara karb kari kark karr kart kat- kata katb katc kati katk katr katt kbaa kbab kbac kbai kbak kbar kbat kbba kbbb kbbc kbbi kbbk kbbr kbbt kbca kbcb kbci kbck kbcr kbct kbia kbib kbic kbik kbit kbkb kbkk kbkr kbra kbrb kbrc kbri kbrk kbrt kbta kbtb kbtc kbtk kbtr kbtt kcaa kcab kcac kcai kcar kcat kcba kcbc kcbi kcbk kcbr kcca kccb kccc kcci kcck kccr kcct kcic kcii kcir kcit kckc kckk kckr kcrc kcri kcrr kcrt kcta kctb kctc kcti kiab kiac kiai kiar kiba kibb kibc kibi kibr kibt kica kicb kicc kick kicr kict kiia kiic kiii kiik kiit kika kikc kiki kikk kikr kikt kira kirb kirc kiri kirk kirr kirt kita kitc kiti kitr kitt kkaa kkac kkai kkar kkat kkba kkbb kkbi kkbr kkbt kkcb kkci kkck kkcr kkct kkia kkic kkik kkit kkkk kkrb kkrc kkrk kkrr kkrt kktc kktk krab