-th a-a a-b a-c a-t aaa aab aac aae aaf aah aas aat ab- aba abb abc abe abf abh abs abt ac- aca acb acc ace acf ach acs act aea aeb aec aee aef aeh aes aet af- afa afb afc afe aff afh afs aft aha ahb ahc ahe ahf ahh ahs aht as- asa asb asc ase asf ash ass ast at- ata atb atc ate atf ath ats att baa bab bac bae baf bah bas bat bba bbb bbc bbe bbf bbh bbs bbt bca bcb bcc bce bcf bch bcs bct be- bea beb bec bee bef beh bes bet bfa bfb bfc bfe bff bfh bfs bft bha bhb bhc bhe bhf bhh bhs bht bsa bsb bsc bse bsf bsh bss bst bta btb btc bte btf bth bts btt c-- caa cab cac cae caf cah cas cat cba cbb cbc cbe cbf cbh cbs cbt cca ccb ccc cce ccf cch ccs cct ce- cea ceb cec cee cef ceh ces cet cfa cfb cfc cfe cff cfh cfs cft ch- cha chb chc che chf chh chs cht csa csb csc cse csf csh css cst cta ctb ctc cte ctf cth cts ctt eaa eab eac eae eaf eah eas eat eba ebb ebc ebe ebf ebh ebs ebt ec- eca ecb ecc ece ecf ech ecs ect eea eeb eec eee eef ees eet ef- efa efb efc efe eff efh efs eft eha ehb ehc ehe ehf ehh ehs eht es- esa esb esc ese esf esh ess est eta etb etc ete etf eth ets ett faa fab fac fae faf fah fas fat fba fbb fbc fbe fbf fbh fbs fbt fca fcb fcc fce fcf fcs fct fea feb fec fee fef feh fes fet ffa ffc ffe fff ffh ffs fft fha fhb fhc fhe fhf fhh fhs fsa fsb fsc fse fsf fsh fss fst fta ftb ftc fte ftf fth fts ftt haa hab hac hae haf hah has hat hba hbb hbc hbe hbf hbh hbs hbt hca hcb hcc hce hcf hch hcs hct he- hea heb hec hee hef heh hes het hfa hfb hfc hfe hff hfh hfs hft hha hhb hhc hhe hhf hhh hhs hht hsa hsb hsc hse hsf hsh hss hst hta htb htc hte htf hth hts htt saa sab sac sae saf sah sas sat sba sbb sbc sbe sbf sbh sbs sbt sca scb scc sce scf sch scs sct se- sea seb sec see sef seh ses set sfa sfb sfc sfe sff sfh sfs sft sh- sha shb shc she shf shh shs sht ss- ssa ssb ssc sse ssf ssh sss sst sta stb stc ste stf sth sts stt taa tab tac tae taf tah tas tat tba tbb tbc tbe tbf tbh tbs tbt tca tcb tcc tce tcf tch tcs tct te- tea teb tec tee tef teh tes tet tfa tfb tfc tfe tff tfh tfs tft th- tha thb thc the thf thh ths tht tsa tsb tsc tse tsf tsh tss tst tta ttb ttc tte ttf tth tts ttt