-ic -th a-a a-b a-c a-i a-t aaa aab aac aah aai aas aat aay ab- aba abb abc abh abi abs abt aby ac- aca acb acc ach aci acs act acy aha ahb ahc ahh ahi ahs aht ahy ai- aia aib aic aih aii ais ait aiy as- asa asb asc ash asi ass ast asy at- ata atb atc ath ati ats att ay- aya ayc ayh ayi ays ayt baa bab bac bah bai bas bat bay bba bbb bbc bbh bbi bbs bbt bby bca bcb bcc bch bci bcs bct bcy bha bhb bhc bhh bhi bhs bht bi- bia bib bic bih bii bis bit biy bsa bsb bsc bsh bsi bss bst bsy bta btb btc bth bti bts btt bty by- bya byc byh byi bys byt c-- caa cab cac cah cai cas cat cay cba cbb cbc cbh cbi cbs cbt cby cca ccb ccc cch cci ccs cct ch- cha chb chc chh chi chs cht chy ci- cia cib cic cih cii cis cit csa csb csc csh csi css cst csy cta ctb ctc cth cti cts ctt cty cya cyb cyc cys cyt h-i haa hab hac hah hai has hat hay hba hbb hbc hbh hbi hbs hbt hby hca hcb hcc hch hci hcs hct hcy hha hhb hhc hhh hhi hhs hht hhy hia hib hic hih hii his hit hsa hsb hsc hsh hsi hss hst hsy hta htb htc hth hti hts htt hty hy- hya hyb hyc hyh hyi hys hyt hyy ia- iaa iab iac iah iai ias iat iba ibb ibc ibh ibi ibs ibt iby ica icb icc ich ici ics ict icy iha ihb ihc ihh ihi ihs iht ihy iia iib iic iih iii iis iit is- isa isb isc ish isi iss ist isy ita itb itc ith iti its itt ity iya iyc iys iyt iyy saa sab sac sah sai sas sat say sba sbb sbc sbh sbi sbs sbt sby sca scb scc sch sci scs sct sh- sha shb shc shh shi shs sht shy sia sib sic sih sii sis sit ss- ssa ssb ssc ssh ssi sss sst sta stb stc sth sti sts stt sty sy- sya syb syc syh syi sys syt taa tab tac tah tai tas tat tay tba tbb tbc tbh tbi tbs tbt tca tcb tcc tch tci tcs tct th- tha thb thc thh thi ths tht thy tia tib tic tih tii tis tit tiy tsa tsb tsc tsh tsi tss tst tsy tta ttb ttc tth tti tts ttt tty tya tyc tys tyt yaa yab yac yah yai yas yat yay ybc ybi ybs yby yca ycc ych yci ycs ycy yha yhc yhi yhs yht yih yii yis yit ysa ysb ysc ysi yss yst ysy yta ytc yth yts ytt yyb yyc yys yyt yyy