c-- ccc ccm ccn cco ccp cmc cmm cmn cmo cmp cn- cnc cnm cnn cno cnp co- coc com con coo cop cpc cpm cpn cpo cpp m-o mc- mcc mcm mcn mco mcp mmc mmm mmn mmo mmp mnc mnm mnn mno mnp moc mom mon moo mop mpc mpm mpn mpo mpp ncc ncm ncn nco ncp nmc nmm nmn nmo nmp nnc nnm nnn nno nnp no- noc nom non noo nop npc npm npn npo npp oc- occ ocm ocn oco ocp om- omc omm omn omo omp on- onc onn ono onp oo- ooc oom oon ooo oop op- opc opm opn opo opp p-p pcc pcm pcn pco pcp pmc pmm pmn pmo pmp pn- pnc pnm pnn pno pnp poc pom pon poo pop ppc ppm ppn ppo ppp