c-- ccc ccg cco ccr ccw cgc cgg cgo cgr cgw co- coc cog coo cor cow crc crg cro crr crw cw- cwc cwg cwo cwr gcc gcg gco gcr gcw ggc ggg ggo ggr ggw goc gog goo gor gow grc grg gro grr grw gwc gwg gwr oc- occ ocg oco ocr ocw ogc ogg ogo oo- ooc oog ooo oor oow or- orc org oro orr owc owo oww rcc rcg rco rcr rcw rgc rgg rgo rgr rgw roc rog roo ror row rrc rrg rrr rwc rwr wcc wcg wco wcr wcw wgc wgo wgr wgw woc wog woo wor wow wr- wrc wrg wro wrr wrw wwc wwo www