a-a a-c a-t aaa aac aak aao aap aat aay ac- aca acc ack aco acp act acy aka akc akk ako akp aoa aoc aok aoo aop aot ap- apa apc apk apo app apt apy at- ata atc ato atp att ay- aya ayc ayk ayo ayp ayt c-- caa cac cak cao cap cat cay cca ccc cck cco ccp cct cka ckc cko ckt cky co- coa coc cok coo cop cot coy cpa cpc cpk cpo cpp cpt cta ctc ctk cto ctp ctt cty cya cyc cyk cyo cyp cyt k-t ka- kaa kac kak kao kap kat kay kca kcc kck kcp kct kkc kkk kkp kkt kky koa koc kok koo kop kot koy kpa kpc kpk kpo kpp kpt kta ktc ktk kto ktp ktt kya kyc kyo kyp kyt oaa oac oak oao oap oat oc- oca occ ock oco ocp oct oka okc okk oko okp oo- ooa ooc ook ooo oop oot op- opa opc opk opo opp opt opy ot- ota otc otk oto otp ott oya oyo p-p paa pac pak pao pap pat pay pca pcc pck pco pcp pct pka pkc pko pkp pkt pky poa poc pok poo pop pot poy ppa ppc ppk ppo ppp ppt pt- pta ptc ptk pto ptp ptt pty py- pya pyc pyk pyo pyt taa tac tak tao tap tat tay tca tcc tck tco tcp tct tka tkc tkk tko tkp tkt tky to- toa toc tok too top tot toy tpa tpc tpk tpo tpp tpt tta ttc ttk tto ttp ttt tty tya tyc tyo typ tyt yaa yac yak yao yap yat yay yca ycc yco ycp ycy yka ykk yoc yok yoo yop yot yoy ypa ypo yta ytc ytk yto ytp ytt yyc yyt yyy