-ol c-- ccc cce ccf ccl cco ccu ce- cec cee cef cel ceo ceu cfc cfe cff cfl cfo cfu cl- clc cle clf cll clo clu co- coc coe cof col coo cou cuc cue cuf cul cuo cuu ec- ecc ece ecf ecl eco ecu eec eee eef eel eeo ef- efc efe eff efl efo elc ele elf ell elo elu eo- eoc eoe eof eol eoo eou eu- euc eue euf eul fcc fce fcf fcl fco fcu fec fee fef fel feo feu ffc ffe fff ffl ffo ffu flc fle flf fll flo flu foc foe fof fol foo fou fue fuf ful fuo fuu lcc lce lcf lcl lco lcu lec lee lef lel leo leu lfc lfe lff lfl lfo lfu llc lle llf lll llo llu loc loe lof lol loo lou luc lue luf lul luo luu oc- occ ocf ocl oco ocu oec oee oef oel oeo of- ofc ofe off ofl ofo ofu olc ole olf oll olo olu oo- ooc oof ool ooo ou- ouc oue ouf oul ouo ucc uce ucf ucl uco ucu uec uee uef uel ufc ufe uff ufl ufo ufu ulc ule ulf ull ulo ulu uoc uoe uol uoo uuc uue uuu