-ol c-- ccc ccf ccl cco ccu cfc cff cfl cfo cfu cl- clc clf cll clo clu co- coc cof col coo cou cuc cuf cul cuo cuu fcc fcf fcl fco fcu ffc fff ffl ffo ffu flc flf fll flo flu foc fof fol foo fou fuf ful fuo fuu lcc lcf lcl lco lcu lfc lff lfl lfo lfu llc llf lll llo llu loc lof lol loo lou luc luf lul luo luu oc- occ ocf ocl oco ocu of- ofc off ofl ofo ofu olc olf oll olo olu oo- ooc oof ool ooo ou- ouc ouf oul ouo ucc ucf ucl uco ucu ufc uff ufl ufo ufu ulc ulf ull ulo ulu uoc uol uoo uuc uuu