-ol c-- ccc cce ccf ccl cco ce- cec cee cef cel ceo cfc cfe cff cfl cfo cl- clc cle clf cll clo co- coc coe cof col coo ec- ecc ece ecf ecl eco eec eee eef eel eeo ef- efc efe eff efl efo elc ele elf ell elo eo- eoc eoe eof eol eoo fcc fce fcf fcl fco fec fee fef fel feo ffc ffe fff ffl ffo flc fle flf fll flo foc foe fof fol foo lcc lce lcf lcl lco lec lee lef lel leo lfc lfe lff lfl lfo llc lle llf lll llo loc loe lof lol loo oc- occ ocf ocl oco oec oee oef oel oeo of- ofc ofe off ofl ofo olc ole olf oll olo oo- ooc oof ool ooo