a-a a-c aaa aac aam aao aas aay ac- aca acc acm aco acs acy ama amc amm amo ams amy aoa aoc aom aoo aos as- asa asc asm aso ass asy ay- aya ayc ayo ays c-- caa cac cam cao cas cay cca ccc ccm cco ccs cma cmc cmm cmo cms cmy co- coa coc com coo cos coy csa csc csm cso css csy cya cyc cym cyo cys m-o maa mac mam mao mas may mc- mca mcc mcm mco mcs mma mmc mmm mmo mms moa moc mom moo mos moy msa msc msm mso mss msy my- mya myc mym myo mys oaa oac oam oao oas oc- oca occ ocm oco ocs om- oma omc omm omo oms omy oo- ooa ooc oom ooo oos os- osa osc osm oso oss oya oyo oys saa sac sam sao sas say sca scc scm sco scs sma smc smm smo sms smy soa soc som soo sos soy ss- ssa ssc ssm sso sss sy- sya syc sym sys yaa yac yam yao yas yay yca ycc yco ycs ycy yma ymc ymm ymo yms yoc yom yoo yos yoy ysa ysc ysm yso yss ysy yyc yys yyy