c-- ccc ccm ccn cco ccs cmc cmm cmn cmo cms cmy cn- cnc cnm cnn cno cns cny co- coc com con coo cos coy csc csm csn cso css csy cyc cym cyn cyo cys m-o mc- mcc mcm mcn mco mcs mmc mmm mmn mmo mms mnc mnm mnn mno mns moc mom mon moo mos moy msc msm msn mso mss msy my- myc mym myn myo mys ncc ncm ncn nco ncs nmc nmm nmn nmo nms nnc nnm nnn nno nns no- noc nom non noo nos noy nsc nsm nsn nso nss nsy nyc nym nyn nyo nys nyy oc- occ ocm ocn oco ocs om- omc omm omn omo oms omy on- onc onn ono ons ony oo- ooc oom oon ooo oos os- osc osm osn oso oss oyo oys scc scm scn sco scs smc smm smn smo sms smy snc snm snn sno sns sny soc som son soo sos soy ss- ssc ssm ssn sso sss sy- syc sym syn sys ycc yco ycs ycy ymc ymm ymo yms ynn yns yny yoc yom yon yoo yos yoy ysc ysm yso yss ysy yyc yys yyy