-ol c-- ccc cce ccf ccl ccn cco ce- cec cee cef cel cen ceo cfc cfe cff cfl cfn cfo cl- clc cle clf cll cln clo cn- cnc cne cnf cnl cnn cno co- coc coe cof col con coo ec- ecc ece ecf ecl ecn eco eec eee eef eel een eeo ef- efc efe eff efl efo elc ele elf ell eln elo en- enc ene enf enl enn eno eo- eoc eoe eof eol eon eoo fcc fce fcf fcl fcn fco fec fee fef fel fen feo ffc ffe fff ffl ffn ffo flc fle flf fll fln flo fnc fne fnf fnl fnn foc foe fof fol fon foo lcc lce lcf lcl lcn lco lec lee lef lel len leo lfc lfe lff lfl lfn lfo llc lle llf lll lln llo lnc lne lnl lnn lno loc loe lof lol lon loo ncc nce ncf ncl ncn nco ne- nec nee nef nel nen neo nfc nfe nff nfl nfn nfo nlc nle nlf nll nln nlo nnc nne nnf nnl nnn nno no- noc noe nof nol non noo oc- occ ocf ocl ocn oco oec oee oef oel oen oeo of- ofc ofe off ofl ofn ofo olc ole olf oll oln olo on- onc one onf onl onn ono oo- ooc oof ool oon ooo