-ol c-- ccc ccd ccl ccm cco ccs cdc cdd cdl cdm cdo cds cl- clc cld cll clm clo cls cmc cmd cml cmm cmo cms co- coc cod col com coo cos csc csd csl csm cso css dcc dcd dcl dcm dco dcs ddc ddd ddl ddm ddo dds dl- dlc dld dll dlm dlo dls dmc dmd dml dmm dmo dms doc dod dol dom doo dos dsc dsd dsl dsm dso dss lcc lcd lcl lcm lco lcs ldc ldd ldl ldm ldo lds llc lld lll llm llo lls lmc lmd lml lmm lmo lms loc lod lol lom loo los lsc lsd lsl lsm lso lss m-o mc- mcc mcd mcl mcm mco mcs mdc mdd mdl mdm mdo mds mlc mld mll mlm mlo mls mmc mmd mml mmm mmo mms moc mod mol mom moo mos msc msd msl msm mso mss oc- occ ocd ocl ocm oco ocs odc odd odl odm odo ods olc old oll olm olo ols om- omc omd oml omm omo oms oo- ooc ood ool oom ooo oos os- osc osd osl osm oso oss scc scd scl scm sco scs sdc sdd sdl sdm sdo sds slc sld sll slm slo sls smc smd sml smm smo sms soc sod sol som soo sos ss- ssc ssd ssl ssm sso sss