-ol c-- ccc ccd ccl cco ccp ccs cdc cdd cdl cdo cdp cds cl- clc cld cll clo clp cls co- coc cod col coo cop cos cpc cpd cpl cpo cpp cps csc csd csl cso csp css dcc dcd dcl dco dcp dcs ddc ddd ddl ddo ddp dds dl- dlc dld dll dlo dlp dls doc dod dol doo dop dos dpc dpd dpl dpo dpp dps dsc dsd dsl dso dsp dss l-p lcc lcd lcl lco lcp lcs ldc ldd ldl ldo ldp lds llc lld lll llo llp lls loc lod lol loo lop los lpc lpd lpl lpo lpp lps lsc lsd lsl lso lsp lss oc- occ ocd ocl oco ocp ocs odc odd odl odo odp ods olc old oll olo olp ols oo- ooc ood ool ooo oop oos op- opc opd opl opo opp ops os- osc osd osl oso osp oss p-p pcc pcd pcl pco pcp pcs pdc pdd pdl pdo pdp pds plc pld pll plo plp pls poc pod pol poo pop pos ppc ppd ppl ppo ppp pps ps- psc psd psl pso psp pss scc scd scl sco scp scs sdc sdd sdl sdo sdp sds slc sld sll slo slp sls soc sod sol soo sop sos spc spd spl spo spp sps ss- ssc ssd ssl sso ssp sss