c-- ccc ccg cco ccr ccs ccw cgc cgg cgo cgr cgs cgw co- coc cog coo cor cos cow crc crg cro crr crs crw csc csg cso csr css csw cw- cwc cwg cwo cwr cws gcc gcg gco gcr gcs gcw ggc ggg ggo ggr ggs ggw goc gog goo gor gos gow grc grg gro grr grs grw gsc gsg gso gsr gss gsw gwc gwg gwr gws oc- occ ocg oco ocr ocs ocw ogc ogg ogo ogs oo- ooc oog ooo oor oos oow or- orc org oro orr ors os- osc osg oso osr oss osw owc owo ows oww rcc rcg rco rcr rcs rcw rgc rgg rgo rgr rgs rgw roc rog roo ror ros row rrc rrg rrr rrs rsc rsg rso rsr rss rsw rwc rwr rws scc scg sco scr scs scw sgc sgg sgo sgr sgs soc sog soo sor sos sow sr- src srg sro srr srs srw ss- ssc ssg sso ssr sss ssw swc swg swo swr sws wcc wcg wco wcr wcs wcw wgc wgo wgr wgs wgw woc wog woo wor wos wow wr- wrc wrg wro wrr wrs wrw wsc wsg wso wsr wss wsw wwc wwo www