-ol c-- ccc ccd cce ccl cco ccp ccs cdc cdd cde cdl cdo cdp cds ce- cec ced cee cel ceo cep ces cl- clc cld cle cll clo clp cls co- coc cod coe col coo cop cos cpc cpd cpe cpl cpo cpp cps csc csd cse csl cso csp css dcc dcd dce dcl dco dcp dcs ddc ddd dde ddl ddo ddp dds de- dec ded dee del deo dep des dl- dlc dld dle dll dlo dlp dls doc dod doe dol doo dop dos dpc dpd dpe dpl dpo dpp dps dsc dsd dse dsl dso dsp dss ec- ecc ecd ece ecl eco ecs ed- edc edd ede edl edo edp eds eec eed eee eel eeo eep ees elc eld ele ell elo elp els eo- eoc eod eoe eol eoo eop eos ep- epc epd epe epl epo epp eps es- esc esd ese esl eso esp ess l-p lcc lcd lce lcl lco lcp lcs ldc ldd lde ldl ldo ldp lds lec led lee lel leo lep les llc lld lle lll llo llp lls loc lod loe lol loo lop los lpc lpd lpe lpl lpo lpp lps lsc lsd lse lsl lso lsp lss oc- occ ocd ocl oco ocp ocs odc odd ode odl odo odp ods oec oed oee oel oeo oep oes olc old ole oll olo olp ols oo- ooc ood ool ooo oop oos op- opc opd ope opl opo opp ops os- osc osd ose osl oso osp oss p-p pcc pcd pce pcl pco pcp pcs pdc pdd pde pdl pdo pdp pds pec ped pee pel peo pep pes plc pld ple pll plo plp pls poc pod poe pol poo pop pos ppc ppd ppe ppl ppo ppp pps ps- psc psd pse psl pso psp pss scc scd sce scl sco scp scs sdc sdd sde sdl sdo sdp sds se- sec sed see sel seo sep ses slc sld sle sll slo slp sls soc sod soe sol soo sop sos spc spd spe spl spo spp sps ss- ssc ssd sse ssl sso ssp sss