a-a a-c aaa aac aan aao aas aay ac- aca acc acn aco acs acy an- ana anc ann ano ans any aoa aoc aon aoo aos as- asa asc asn aso ass asy ay- aya ayc ayn ayo ays c-- caa cac can cao cas cay cca ccc ccn cco ccs cn- cna cnc cnn cno cns cny co- coa coc con coo cos coy csa csc csn cso css csy cya cyc cyn cyo cys naa nac nan nao nas nay nca ncc ncn nco ncs nna nnc nnn nno nns no- noa noc non noo nos noy nsa nsc nsn nso nss nsy nya nyc nyn nyo nys nyy oaa oac oan oao oas oc- oca occ ocn oco ocs on- ona onc onn ono ons ony oo- ooa ooc oon ooo oos os- osa osc osn oso oss oya oyo oys saa sac san sao sas say sca scc scn sco scs sna snc snn sno sns sny soa soc son soo sos soy ss- ssa ssc ssn sso sss sy- sya syc syn sys yaa yac yan yao yas yay yca ycc yco ycs ycy yna ynn yns yny yoc yon yoo yos yoy ysa ysc yso yss ysy yyc yys yyy