c-- ccc ccm ccn cco ccp ccs cmc cmm cmn cmo cmp cms cn- cnc cnm cnn cno cnp cns co- coc com con coo cop cos cpc cpm cpn cpo cpp cps csc csm csn cso csp css m-o mc- mcc mcm mcn mco mcp mcs mmc mmm mmn mmo mmp mms mnc mnm mnn mno mnp mns moc mom mon moo mop mos mpc mpm mpn mpo mpp mps msc msm msn mso msp mss ncc ncm ncn nco ncp ncs nmc nmm nmn nmo nmp nms nnc nnm nnn nno nnp nns no- noc nom non noo nop nos npc npm npn npo npp nps nsc nsm nsn nso nsp nss oc- occ ocm ocn oco ocp ocs om- omc omm omn omo omp oms on- onc onn ono onp ons oo- ooc oom oon ooo oop oos op- opc opm opn opo opp ops os- osc osm osn oso osp oss p-p pcc pcm pcn pco pcp pcs pmc pmm pmn pmo pmp pms pn- pnc pnm pnn pno pnp pns poc pom pon poo pop pos ppc ppm ppn ppo ppp pps ps- psc psm psn pso psp pss scc scm scn sco scp scs smc smm smn smo smp sms snc snm snn sno snp sns soc som son soo sop sos spc spm spn spo spp sps ss- ssc ssm ssn sso ssp sss