a-a a-c a-t aaa aac aak aao aas aat aay ac- aca acc ack aco acs act acy aka akc akk ako aks aoa aoc aok aoo aos aot as- asa asc ask aso ass ast asy at- ata atc ato ats att ay- aya ayc ayk ayo ays ayt c-- caa cac cak cao cas cat cay cca ccc cck cco ccs cct cka ckc cko cks ckt cky co- coa coc cok coo cos cot coy csa csc csk cso css cst csy cta ctc ctk cto cts ctt cty cya cyc cyk cyo cys cyt k-t ka- kaa kac kak kao kas kat kay kca kcc kck kcs kct kkc kkk kks kkt kky koa koc kok koo kos kot koy ksa ksc ksk kso kss kst kta ktc ktk kto kts ktt kya kyc kyo kys kyt oaa oac oak oao oas oat oc- oca occ ock oco ocs oct oka okc okk oko oks oo- ooa ooc ook ooo oos oot os- osa osc osk oso oss ost ot- ota otc otk oto ots ott oya oyo oys saa sac sak sao sas sat say sca scc sck sco scs sct sk- ska skc skk sko sks skt sky soa soc sok soo sos sot soy ss- ssa ssc ssk sso sss sst sta stc stk sto sts stt sty sy- sya syc syk sys syt taa tac tak tao tas tat tay tca tcc tck tco tcs tct tka tkc tkk tko tks tkt tky to- toa toc tok too tos tot toy tsa tsc tsk tso tss tst tsy tta ttc ttk tto tts ttt tty tya tyc tyo tys tyt yaa yac yak yao yas yat yay yca ycc yco ycs ycy yka ykk yoc yok yoo yos yot yoy ysa ysc ysk yso yss yst ysy yta ytc ytk yto yts ytt yyc yys yyt yyy