-ol c-- ccc ccd cce ccl cco ccp cdc cdd cde cdl cdo cdp ce- cec ced cee cel ceo cep cl- clc cld cle cll clo clp co- coc cod coe col coo cop cpc cpd cpe cpl cpo cpp dcc dcd dce dcl dco dcp ddc ddd dde ddl ddo ddp de- dec ded dee del deo dep dl- dlc dld dle dll dlo dlp doc dod doe dol doo dop dpc dpd dpe dpl dpo dpp ec- ecc ecd ece ecl eco ed- edc edd ede edl edo edp eec eed eee eel eeo eep elc eld ele ell elo elp eo- eoc eod eoe eol eoo eop ep- epc epd epe epl epo epp l-p lcc lcd lce lcl lco lcp ldc ldd lde ldl ldo ldp lec led lee lel leo lep llc lld lle lll llo llp loc lod loe lol loo lop lpc lpd lpe lpl lpo lpp oc- occ ocd ocl oco ocp odc odd ode odl odo odp oec oed oee oel oeo oep olc old ole oll olo olp oo- ooc ood ool ooo oop op- opc opd ope opl opo opp p-p pcc pcd pce pcl pco pcp pdc pdd pde pdl pdo pdp pec ped pee pel peo pep plc pld ple pll plo plp poc pod poe pol poo pop ppc ppd ppe ppl ppo ppp