c-- ccc ccm ccn cco ccr ccs cmc cmm cmn cmo cmr cms cmy cn- cnc cnm cnn cno cnr cns cny co- coc com con coo cor cos coy crc crm crn cro crr crs cry csc csm csn cso csr css csy cyc cym cyn cyo cyr cys m-o m-r mc- mcc mcm mcn mco mcr mcs mmc mmm mmn mmo mmr mms mnc mnm mnn mno mnr mns moc mom mon moo mor mos moy mrc mrm mrn mro mrr mrs mry msc msm msn mso msr mss msy my- myc mym myn myo myr mys ncc ncm ncn nco ncr ncs nmc nmm nmn nmo nmr nms nnc nnm nnn nno nns no- noc nom non noo nor nos noy nrc nrm nrn nro nrr nrs nry nsc nsm nsn nso nsr nss nsy nyc nym nyn nyo nys nyy oc- occ ocm ocn oco ocr ocs om- omc omm omn omo omr oms omy on- onc onn ono onr ons ony oo- ooc oom oon ooo oor oos or- orc orm orn oro orr ors ory os- osc osm osn oso osr oss oyo oys rcc rcm rcn rco rcr rcs rmc rmm rmn rmo rmr rms rnc rnm rnn rno rnr rns rny roc rom ron roo ror ros roy rrc rrm rrn rrr rrs rsc rsm rsn rso rsr rss ry- ryc rym ryn ryo ryr rys ryy scc scm scn sco scr scs smc smm smn smo smr sms smy snc snm snn sno snr sns sny soc som son soo sor sos soy sr- src srm srn sro srr srs sry ss- ssc ssm ssn sso ssr sss sy- syc sym syn syr sys ycc yco ycs ycy ymc ymm ymo yms ynn yns yny yoc yom yon yoo yor yos yoy yrc yrn yro yrs ysc ysm yso ysr yss ysy yyc yys yyy