-ic -th a-a a-b a-c a-i a-t aaa aab aac aah aai aas aat ab- aba abb abc abh abi abs abt ac- aca acb acc ach aci acs act aha ahb ahc ahh ahi ahs aht ai- aia aib aic aih aii ais ait as- asa asb asc ash asi ass ast at- ata atb atc ath ati ats att baa bab bac bah bai bas bat bba bbb bbc bbh bbi bbs bbt bca bcb bcc bch bci bcs bct bha bhb bhc bhh bhi bhs bht bi- bia bib bic bih bii bis bit bsa bsb bsc bsh bsi bss bst bta btb btc bth bti bts btt c-- caa cab cac cah cai cas cat cba cbb cbc cbh cbi cbs cbt cca ccb ccc cch cci ccs cct ch- cha chb chc chh chi chs cht ci- cia cib cic cih cii cis cit csa csb csc csh csi css cst cta ctb ctc cth cti cts ctt h-i haa hab hac hah hai has hat hba hbb hbc hbh hbi hbs hbt hca hcb hcc hch hci hcs hct hha hhb hhc hhh hhi hhs hht hia hib hic hih hii his hit hsa hsb hsc hsh hsi hss hst hta htb htc hth hti hts htt ia- iaa iab iac iah iai ias iat iba ibb ibc ibh ibi ibs ibt ica icb icc ich ici ics ict iha ihb ihc ihh ihi ihs iht iia iib iic iih iii iis iit is- isa isb isc ish isi iss ist ita itb itc ith iti its itt saa sab sac sah sai sas sat sba sbb sbc sbh sbi sbs sbt sca scb scc sch sci scs sct sh- sha shb shc shh shi shs sht sia sib sic sih sii sis sit ss- ssa ssb ssc ssh ssi sss sst sta stb stc sth sti sts stt taa tab tac tah tai tas tat tba tbb tbc tbh tbi tbs tbt tca tcb tcc tch tci tcs tct th- tha thb thc thh thi ths tht tia tib tic tih tii tis tit tsa tsb tsc tsh tsi tss tst tta ttb ttc tth tti tts ttt