-ol c-- ccc ccf ccg ccl cco cfc cff cfg cfl cfo cgc cgg cgl cgo cl- clc clf clg cll clo co- coc cof cog col coo fcc fcf fcg fcl fco ffc fff ffg ffl ffo fgc fgf fgg fgl flc flf flg fll flo foc fof fog fol foo gcc gcf gcg gcl gco gfc gff gfl gfo ggc ggg ggo glc glf glg gll glo goc gof gog gol goo lcc lcf lcg lcl lco lfc lff lfg lfl lfo lgc lgf lgg lgl lgo llc llf llg lll llo loc lof log lol loo oc- occ ocf ocg ocl oco of- ofc off ofg ofl ofo ogc ogf ogg ogl ogo olc olf olg oll olo oo- ooc oof oog ool ooo