a-a a-c a-t aaa aac aak aas aat aay ac- aca acc ack acs act acy aka akc akk aks as- asa asc ask ass ast asy at- ata atc ats att ay- aya ayc ayk ays ayt c-- caa cac cak cas cat cay cca ccc cck ccs cct cka ckc cks ckt cky csa csc csk css cst csy cta ctc ctk cts ctt cty cya cyc cyk cys cyt k-t ka- kaa kac kak kas kat kay kca kcc kck kcs kct kkc kkk kks kkt kky ksa ksc ksk kss kst kta ktc ktk kts ktt kya kyc kys kyt saa sac sak sas sat say sca scc sck scs sct sk- ska skc skk sks skt sky ss- ssa ssc ssk sss sst sta stc stk sts stt sty sy- sya syc syk sys syt taa tac tak tas tat tay tca tcc tck tcs tct tka tkc tkk tks tkt tky tsa tsc tsk tss tst tsy tta ttc ttk tts ttt tty tya tyc tys tyt yaa yac yak yas yat yay yca ycc ycs ycy yka ykk ysa ysc ysk yss yst ysy yta ytc ytk yts ytt yyc yys yyt yyy