-th a-a a-c a-t aaa aac aaf aah aan aat ac- aca acc acf ach acn act af- afa afc aff afh afn aft aha ahc ahf ahh ahn aht an- ana anc anf anh ann ant at- ata atc atf ath atn att c-- caa cac caf cah can cat cca ccc ccf cch ccn cct cfa cfc cff cfh cfn cft ch- cha chc chf chh chn cht cn- cna cnc cnf cnh cnn cnt cta ctc ctf cth ctn ctt faa fac faf fah fan fat fca fcc fcf fcn fct ffa ffc fff ffh ffn fft fha fhc fhf fhh fhn fna fnc fnf fnh fnn fnt fta ftc ftf fth ftn ftt haa hac haf hah han hat hca hcc hcf hch hcn hct hfa hfc hff hfh hfn hft hha hhc hhf hhh hhn hht hna hnc hnf hnh hnn hnt hta htc htf hth htn htt naa nac naf nah nan nat nca ncc ncf nch ncn nct nfa nfc nff nfn nft nha nhc nhf nhh nhn nht nna nnc nnf nnh nnn nnt nta ntc ntf nth ntn ntt taa tac taf tah tan tat tca tcc tcf tch tcn tct tfa tfc tff tfh tfn tft th- tha thc thf thh thn tht tna tnc tnf tnh tnn tnt tta ttc ttf tth ttn ttt