-ol c-- ccc ccg cck ccl cco ccr cgc cgg cgl cgo cgr ckc cko cl- clc clg clk cll clo clr co- coc cog cok col coo cor crc crg crk crl cro crr gcc gcg gck gcl gco gcr ggc ggg ggo ggr gko glc glg glk gll glo glr goc gog gok gol goo gor grc grg grk grl gro grr kcc kcg kck kcl kcr kgc kgl kgo kkc kkk kkl kkr kl- klc klg klo klr koc kog kok kol koo kor krc krg krk krl kro krr lcc lcg lck lcl lco lcr lgc lgg lgk lgl lgo lgr lkg lkl lkr llc llg llk lll llo llr loc log lok lol loo lor lrc lrg lrk lro lrr oc- occ ocg ock ocl oco ocr ogc ogg ogl ogo okc okg okk okl oko okr olc olg olk oll olo oo- ooc oog ook ool ooo oor or- orc org ork orl oro orr rcc rcg rcl rco rcr rgc rgg rgk rgo rgr rkc rkg rkk rko rlc rlg rll rlo rlr roc rog rok rol roo ror rrc rrg rrk rrl rrr