-ic a-a a-b a-c a-i a-t aaa aab aac aai aak aar aat aay ab- aba abb abc abi abk abr abt aby ac- aca acb acc aci ack acr act acy ai- aia aib aic aii aik air ait aiy aka akb akc aki akk akr ar- ara arb arc ari ark arr art ary at- ata atb atc ati atr att ay- aya ayc ayi ayk ayr ayt baa bab bac bai bak bar bat bay bba bbb bbc bbi bbk bbr bbt bby bca bcb bcc bci bck bcr bct bcy bi- bia bib bic bii bik bir bit biy bka bkb bkc bkk bkr bkt bra brb bri brk brr brt bry bta btb btc bti btk btr btt bty by- bya byc byi byk byr byt c-- caa cab cac cai cak car cat cay cba cbb cbc cbi cbk cbr cbt cby cca ccb ccc cci cck ccr cct ci- cia cib cic cii cik cir cit cka ckb ckc cki ckt cky cra crb crc cri crk crr crt cry cta ctb ctc cti ctk ctr ctt cty cya cyb cyc cyk cyr cyt ia- iaa iab iac iai iar iat iba ibb ibc ibi ibk ibr ibt iby ica icb icc ici ick icr ict icy iia iib iic iii iir iit ika ikb ikc iki ikk ikr ikt ir- ira irb irc iri irk irr irt iry ita itb itc iti itk itt ity iya iyc iyr iyt iyy k-t ka- kaa kab kac kai kak kar kat kay 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 kky kra krc kri krk krr krt kry kta ktb ktc ktk ktr ktt kya kyc kyr kyt ra- raa rab rac rai rak rar rat ray rba rbb rbc rbi rbk rbr rbt rca rcb rcc rci rcr rct ria rib ric rii rik rir rit riy rkb rkc rkk rkt rky rra rrb rrc rri rrk rrr rrt rta rtb rtc rti rtk rtr rtt rty ry- rya ryc ryk ryr ryy taa tab tac tai tak tar tat tay tba tbb tbc tbi tbk tbr tbt tca tcb tcc tci tck tcr tct tia tib tic tii tik tir tit tiy tka tkb tkc tkk tkr tkt tky tra trb trc tri trk trr trt try tta ttb ttc tti ttk ttr ttt tty tya tyc tyr tyt yaa yab yac yai yak yar yat yay ybc ybi ybr yby yca ycc yci ycy yii yir yit yka yki ykk yra yrc yrt yta ytc ytk ytr ytt yyb yyc yyt yyy