a-a a-c aaa aac aad aak aas aay ac- aca acc acd ack acs acy ad- ada adc add adk ads ady aka akc akd akk aks as- asa asc asd ask ass asy ay- aya ayc ayd ayk ays c-- caa cac cad cak cas cay cca ccc ccd cck ccs cda cdc cdd cdk cds cdy cka ckc ckd cks cky csa csc csd csk css csy cya cyc cyd cyk cys daa dac dad dak das day dca dcc dcd dck dcs dda ddc ddd ddk dds ddy dka dkc dkk dks dsa dsc dsd dsk dss dsy dy- dya dyc dyd dyk dys dyy ka- kaa kac kad kak kas kay kca kcc kcd kck kcs kda kdc kdk kds kdy kkc kkk kks kky ksa ksc ksd ksk kss kya kyc kyd kys saa sac sad sak sas say sca scc scd sck scs sda sdc sdd sdk sds sdy sk- ska skc skd skk sks sky ss- ssa ssc ssd ssk sss sy- sya syc syd syk sys yaa yac yad yak yas yay yca ycc ycd ycs ycy yda yds ydy yka ykk ysa ysc ysk yss ysy yyc yys yyy