-ol c-- ccc ccl ccm cco ccs cl- clc cll clm clo cls cmc cml cmm cmo cms co- coc col com coo cos csc csl csm cso css lcc lcl lcm lco lcs llc lll llm llo lls lmc lml lmm lmo lms loc lol lom loo los lsc lsl lsm lso lss m-o mc- mcc mcl mcm mco mcs mlc mll mlm mlo mls mmc mml mmm mmo mms moc mol mom moo mos msc msl msm mso mss oc- occ ocl ocm oco ocs olc oll olm olo ols om- omc oml omm omo oms oo- ooc ool oom ooo oos os- osc osl osm oso oss scc scl scm sco scs slc sll slm slo sls smc sml smm smo sms soc sol som soo sos ss- ssc ssl ssm sso sss