c-- ccc ccm ccn cco ccr cmc cmm cmn cmo cmr cmy cn- cnc cnm cnn cno cnr cny co- coc com con coo cor coy crc crm crn cro crr cry cyc cym cyn cyo cyr m-o m-r mc- mcc mcm mcn mco mcr mmc mmm mmn mmo mmr mnc mnm mnn mno mnr moc mom mon moo mor moy mrc mrm mrn mro mrr mry my- myc mym myn myo myr ncc ncm ncn nco ncr nmc nmm nmn nmo nmr nnc nnm nnn nno no- noc nom non noo nor noy nrc nrm nrn nro nrr nry nyc nym nyn nyo nyy oc- occ ocm ocn oco ocr om- omc omm omn omo omr omy on- onc onn ono onr ony oo- ooc oom oon ooo oor or- orc orm orn oro orr ory oyo rcc rcm rcn rco rcr rmc rmm rmn rmo rmr rnc rnm rnn rno rnr rny roc rom ron roo ror roy rrc rrm rrn rrr ry- ryc rym ryn ryo ryr ryy ycc yco ycy ymc ymm ymo ynn yny yoc yom yon yoo yor yoy yrc yrn yro yyc yyy