-ic -th a-a a-b a-c a-i a-t aaa aab aac aah aai aar aat aay ab- aba abb abc abh abi abr abt aby ac- aca acb acc ach aci acr act acy aha ahb ahc ahh ahi ahr aht ahy ai- aia aib aic aih aii air ait aiy ar- ara arb arc arh ari arr art ary at- ata atb atc ath ati atr att ay- aya ayc ayh ayi ayr ayt baa bab bac bah bai bar bat bay bba bbb bbc bbh bbi bbr bbt bby bca bcb bcc bch bci bcr bct bcy bha bhb bhc bhh bhi bhr bht bi- bia bib bic bih bii bir bit biy bra brb brh bri brr brt bry bta btb btc bth bti btr btt bty by- bya byc byh byi byr byt c-- caa cab cac cah cai car cat cay cba cbb cbc cbh cbi cbr cbt cby cca ccb ccc cch cci ccr cct ch- cha chb chc chh chi chr cht chy ci- cia cib cic cih cii cir cit cra crb crc crh cri crr crt cry cta ctb ctc cth cti ctr ctt cty cya cyb cyc cyr cyt h-i haa hab hac hah hai har hat hay hba hbb hbc hbh hbi hbr hbt hby hca hcb hcc hch hci hcr hct hcy hha hhb hhc hhh hhi hhr hht hhy hia hib hic hih hii hir hit hr- hra hrb hrc hrh hri hrr hrt hta htb htc hth hti htr htt hty hy- hya hyb hyc hyh hyi hyr hyt hyy ia- iaa iab iac iah iai iar iat iba ibb ibc ibh ibi ibr ibt iby ica icb icc ich ici icr ict icy iha ihb ihc ihh ihi ihr iht ihy iia iib iic iih iii iir iit ir- ira irb irc iri irr irt iry ita itb itc ith iti itt ity iya iyc iyr iyt iyy ra- raa rab rac rah rai rar rat ray rba rbb rbc rbh rbi rbr rbt rca rcb rcc rch rci rcr rct rh- rha rhb rhc rhh rhi rhr rht ria rib ric rih rii rir rit riy rra rrb rrc rrh rri rrr rrt rta rtb rtc rti rtr rtt rty ry- rya ryc ryr ryy taa tab tac tah tai tar tat tay tba tbb tbc tbh tbi tbr tbt tca tcb tcc tch tci tcr tct th- tha thb thc thh thi thr tht thy tia tib tic tih tii tir tit tiy tra trb trc trh tri trr trt try tta ttb ttc tth tti ttr ttt tty tya tyc tyr tyt yaa yab yac yah yai yar yat yay ybc ybi ybr yby yca ycc ych yci ycy yha yhc yhi yht yih yii yir yit yra yrc yrt yta ytc yth ytr ytt yyb yyc yyt yyy