-ol c-- ccc cce ccf ccl cco ccu ccx ce- cec cee cef cel ceo ceu cex cfc cfe cff cfl cfo cfu cfx cl- clc cle clf cll clo clu clx co- coc coe cof col coo cou cox cuc cue cuf cul cuo cuu cxc cxf cxl cxo cxx ec- ecc ece ecf ecl eco ecu ecx eec eee eef eel eeo eex ef- efc efe eff efl efo efx elc ele elf ell elo elu elx eo- eoc eoe eof eol eoo eou eu- euc eue euf eul eux ex- exc exe exl exo exu exx fcc fce fcf fcl fco fcu fcx fec fee fef fel feo feu fex ffc ffe fff ffl ffo ffu ffx flc fle flf fll flo flu flx foc foe fof fol foo fou fox fue fuf ful fuo fuu fux fxe fxu fxx lcc lce lcf lcl lco lcu lcx lec lee lef lel leo leu lex lfc lfe lff lfl lfo lfu lfx llc lle llf lll llo llu loc loe lof lol loo lou lox luc lue luf lul luo luu lux lxc lxo lxx oc- occ ocf ocl oco ocu ocx oec oee oef oel oeo oex of- ofc ofe off ofl ofo ofu ofx olc ole olf oll olo olu oo- ooc oof ool ooo oox ou- ouc oue ouf oul ouo ox- oxc oxf oxo oxx ucc uce ucf ucl uco ucu uec uee uef uel ufc ufe uff ufl ufo ufu ufx ulc ule ulf ull ulo ulu uoc uoe uol uoo uox uuc uue uuu uxc uxf uxo uxu xcf xcl xcx xee xel xeu xex xfe xfl xfx xlf xoc xof xoo xox xue xul xxl xxo xxx