-ic a-a a-b a-c a-i a-t aaa aab aac aai aar aat aau aay ab- aba abb abc abi abr abt abu aby ac- aca acb acc aci acr act acu acy ai- aia aib aic aii air ait aiu aiy ar- ara arb arc ari arr art aru ary at- ata atb atc ati atr att atu au- aua aub auc aui aur aut ay- aya ayc ayi ayr ayt ayu b-u baa bab bac bai bar bat bau bay bba bbb bbc bbi bbr bbt bbu bby bca bcb bcc bci bcr bct bcu bcy bi- bia bib bic bii bir bit biu biy bra brb bri brr brt bru bry bta btb btc bti btr btt btu bty bua bub buc bui bur but buu buy by- bya byc byi byr byt byu c-- caa cab cac cai car cat cau cay cba cbb cbc cbi cbr cbt cbu cby cca ccb ccc cci ccr cct ccu ci- cia cib cic cii cir cit ciu cra crb crc cri crr crt cru cry cta ctb ctc cti ctr ctt ctu cty cua cub cuc cui cur cut cuu cuy cya cyb cyc cyr cyt ia- iaa iab iac iai iar iat iau iba ibb ibc ibi ibr ibt ibu iby ica icb icc ici icr ict icu icy iia iib iic iii iir iit iiu ir- ira irb irc iri irr irt iru iry ita itb itc iti itt itu ity iu- iua iub iuc iui iur iut iya iyc iyr iyt iyy ra- raa rab rac rai rar rat rau ray rba rbb rbc rbi rbr rbt rbu rca rcb rcc rci rcr rct rcu ria rib ric rii rir rit riy rra rrb rrc rri rrr rrt rru rta rtb rtc rti rtr rtt rtu rty rua rub ruc rui rur rut ruu ruy ry- rya ryc ryr ryu ryy taa tab tac tai tar tat tau tay tba tbb tbc tbi tbr tbt tbu tca tcb tcc tci tcr tct tcu tia tib tic tii tir tit tiu tiy tra trb trc tri trr trt tru try tta ttb ttc tti ttr ttt ttu tty tua tub tuc tui tur tut tuu tuy tya tyc tyr tyt ua- uaa uab uac uai uar uat uau uay uba ubb ubc ubi ubr ubt ubu uby uca ucb ucc uci ucr uct ucu uia uib uic uii uir uit uiu ur- ura urb urc uri urr urt uru ury uta utb utc uti utr utt utu uty uua uuc uur uut uuu uyc uyi uyu yaa yab yac yai yar yat yau yay ybc ybi ybr yby yca ycc yci ycu ycy yii yir yit yra yrc yrt yru yta ytc ytr ytt ytu yua yui yur yut yuu yuy yyb yyc yyt yyu yyy