a-a a-c aaa aac aak aap aas aay ac- aca acc ack acp acs acy aka akc akk akp aks ap- apa apc apk app aps apy as- asa asc ask asp ass asy ay- aya ayc ayk ayp ays c-- caa cac cak cap cas cay cca ccc cck ccp ccs cka ckc cks cky cpa cpc cpk cpp cps csa csc csk csp css csy cya cyc cyk cyp cys ka- kaa kac kak kap kas kay kca kcc kck kcp kcs kkc kkk kkp kks kky kpa kpc kpk kpp kps ksa ksc ksk ksp kss kya kyc kyp kys p-p paa pac pak pap pas pay pca pcc pck pcp pcs pka pkc pkp pks pky ppa ppc ppk ppp pps ps- psa psc psk psp pss psy py- pya pyc pyk pys saa sac sak sap sas say sca scc sck scp scs sk- ska skc skk skp sks sky spa spc spk spp sps spy ss- ssa ssc ssk ssp sss sy- sya syc syk syp sys yaa yac yak yap yas yay yca ycc ycp ycs ycy yka ykk ypa yps ysa ysc ysk ysp yss ysy yyc yys yyy