-th a-a a-b a-c a-t aaa aab aac aae aaf aah aan aas aat ab- aba abb abc abe abf abh abn abs abt ac- aca acb acc ace acf ach acn acs act aea aeb aec aee aef aeh aen aes aet af- afa afb afc afe aff afh afn afs aft aha ahb ahc ahe ahf ahh ahn ahs aht an- ana anb anc ane anf anh ann ans ant as- asa asb asc ase asf ash asn ass ast at- ata atb atc ate atf ath atn ats att baa bab bac bae baf bah ban bas bat bba bbb bbc bbe bbf bbh bbn bbs bbt bca bcb bcc bce bcf bch bcn bcs bct be- bea beb bec bee bef beh ben bes bet bfa bfb bfc bfe bff bfh bfn bfs bft bha bhb bhc bhe bhf bhh bhs bht bna bnb bnc bne bnf bnn bns bnt bsa bsb bsc bse bsf bsh bsn bss bst bta btb btc bte btf bth btn bts btt c-- caa cab cac cae caf cah can cas cat cba cbb cbc cbe cbf cbh cbn cbs cbt cca ccb ccc cce ccf cch ccn ccs cct ce- cea ceb cec cee cef ceh cen ces cet cfa cfb cfc cfe cff cfh cfn cfs cft ch- cha chb chc che chf chh chn chs cht cn- cna cnb cnc cne cnf cnh cnn cns cnt csa csb csc cse csf csh csn css cst cta ctb ctc cte ctf cth ctn cts ctt eaa eab eac eae eaf eah ean eas eat eba ebb ebc ebe ebf ebh ebn ebs ebt ec- eca ecb ecc ece ecf ech ecn ecs ect eea eeb eec eee eef een ees eet ef- efa efb efc efe eff efh efs eft eha ehb ehc ehe ehf ehh ehn ehs eht en- ena enb enc ene enf enh enn ens ent es- esa esb esc ese esf esh esn ess est eta etb etc ete etf eth etn ets ett faa fab fac fae faf fah fan fas fat fba fbb fbc fbe fbf fbh fbn fbs fbt fca fcb fcc fce fcf fcn fcs fct fea feb fec fee fef feh fen fes fet ffa ffc ffe fff ffh ffn ffs fft fha fhb fhc fhe fhf fhh fhn fhs fna fnb fnc fne fnf fnh fnn fns fnt fsa fsb fsc fse fsf fsh fsn fss fst fta ftb ftc fte ftf fth ftn fts ftt haa hab hac hae haf hah han has hat hba hbb hbc hbe hbf hbh hbn hbs hbt hca hcb hcc hce hcf hch hcn hcs hct he- hea heb hec hee hef heh hen hes het hfa hfb hfc hfe hff hfh hfn hfs hft hha hhb hhc hhe hhf hhh hhn hhs hht hna hnb hnc hne hnf hnh hnn hns hnt hsa hsb hsc hse hsf hsh hsn hss hst hta htb htc hte htf hth htn hts htt naa nab nac nae naf nah nan nas nat nba nbb nbc nbe nbf nbn nbs nbt nca ncb ncc nce ncf nch ncn ncs nct ne- nea neb nec nee nef neh nen nes net nfa nfb nfc nfe nff nfn nfs nft nha nhb nhc nhe nhf nhh nhn nhs nht nna nnb nnc nne nnf nnh nnn nns nnt nsa nsb nsc nse nsf nsh nsn nss nst nta ntb ntc nte ntf nth ntn nts ntt saa sab sac sae saf sah san sas sat sba sbb sbc sbe sbf sbh sbn sbs sbt sca scb scc sce scf sch scn scs sct se- sea seb sec see sef seh sen ses set sfa sfb sfc sfe sff sfh sfn sfs sft sh- sha shb shc she shf shh shn shs sht sna snb snc sne snf snn sns snt ss- ssa ssb ssc sse ssf ssh ssn sss sst sta stb stc ste stf sth stn sts stt taa tab tac tae taf tah tan tas tat tba tbb tbc tbe tbf tbh tbn tbs tbt tca tcb tcc tce tcf tch tcn tcs tct te- tea teb tec tee tef teh ten tes tet tfa tfb tfc tfe tff tfh tfn tfs tft th- tha thb thc the thf thh thn ths tht tna tnb tnc tne tnf tnh tnn tns tnt tsa tsb tsc tse tsf tsh tsn tss tst tta ttb ttc tte ttf tth ttn tts ttt