c-- ccc cck ccm ccn cco ccr ckc ckm cko cmc cmk cmm cmn cmo cmr cn- cnc cnm cnn cno cnr co- coc cok com con coo cor crc crk crm crn cro crr kcc kck kcm kcn kcr kkc kkk kkm kkn kkr kmc kmk kmm kmo kn- knc knk knm knn kno knr koc kok kom kon koo kor krc krk krn kro krr m-o m-r mc- mcc mck mcm mcn mco mcr mkc mkk mkm mkn mko mkr mmc mmk mmm mmn mmo mmr mnc mnk mnm mnn mno mnr moc mok mom mon moo mor mrc mrk mrm mrn mro mrr ncc nck ncm ncn nco ncr nkc nkk nkm nkn nko nkr nmc nmk nmm nmn nmo nmr nnc nnk nnm nnn nno no- noc nok nom non noo nor nrc nrk nrm nrn nro nrr oc- occ ock ocm ocn oco ocr okc okk oko okr om- omc omm omn omo omr on- onc onk onn ono onr oo- ooc ook oom oon ooo oor or- orc ork orm orn oro orr rcc rcm rcn rco rcr rkc rkk rkm rko rmc rmm rmn rmo rmr rnc rnm rnn rno rnr roc rok rom ron roo ror rrc rrk rrm rrn rrr