-th a-a a-c a-t aaa aac aaf aah aan aas aat ac- aca acc acf ach acn acs act af- afa afc aff afh afn afs aft aha ahc ahf ahh ahn ahs aht an- ana anc anf anh ann ans ant as- asa asc asf ash asn ass ast at- ata atc atf ath atn ats att c-- caa cac caf cah can cas cat cca ccc ccf cch ccn ccs cct cfa cfc cff cfh cfn cfs cft ch- cha chc chf chh chn chs cht cn- cna cnc cnf cnh cnn cns cnt csa csc csf csh csn css cst cta ctc ctf cth ctn cts ctt faa fac faf fah fan fas fat fca fcc fcf fcn fcs fct ffa ffc fff ffh ffn ffs fft fha fhc fhf fhh fhn fhs fna fnc fnf fnh fnn fns fnt fsa fsc fsf fsh fsn fss fst fta ftc ftf fth ftn fts ftt haa hac haf hah han has hat hca hcc hcf hch hcn hcs hct hfa hfc hff hfh hfn hfs hft hha hhc hhf hhh hhn hhs hht hna hnc hnf hnh hnn hns hnt hsa hsc hsf hsh hsn hss hst hta htc htf hth htn hts htt naa nac naf nah nan nas nat nca ncc ncf nch ncn ncs nct nfa nfc nff nfn nfs nft nha nhc nhf nhh nhn nhs nht nna nnc nnf nnh nnn nns nnt nsa nsc nsf nsh nsn nss nst nta ntc ntf nth ntn nts ntt saa sac saf sah san sas sat sca scc scf sch scn scs sct sfa sfc sff sfh sfn sfs sft sh- sha shc shf shh shn shs sht sna snc snf snn sns snt ss- ssa ssc ssf ssh ssn sss sst sta stc stf sth stn sts stt taa tac taf tah tan tas tat tca tcc tcf tch tcn tcs tct tfa tfc tff tfh tfn tfs tft th- tha thc thf thh thn ths tht tna tnc tnf tnh tnn tns tnt tsa tsc tsf tsh tsn tss tst tta ttc ttf tth ttn tts ttt