c-- ccc ccd ccg cco ccr ccu cdc cdd cdg cdo cdr cdu cgc cgd cgg cgo cgr cgu co- coc cod cog coo cor cou crc crd crg cro crr cru cuc cud cug cuo cur cuu dcc dcd dcg dco dcr dcu ddc ddd ddg ddo ddr ddu dgc dgd dgg dgr dgu doc dod dog doo dor dou drc drd drg dro drr dru duc dud dug duo dur g-d gcc gcd gcg gco gcr gcu gdc gdd gdo gdr gdu ggc ggd ggg ggo ggr ggu goc god gog goo gor gou grc grd grg gro grr gru gu- guc gud gug guo gur guu oc- occ ocd ocg oco ocr ocu odc odd odg odo odr odu ogc ogd ogg ogo oo- ooc ood oog ooo oor or- orc ord org oro orr oru ou- ouc oud ouo our rcc rcd rcg rco rcr rcu rdc rdd rdg rdo rdr rdu rgc rgd rgg rgo rgr roc rod rog roo ror rou rrc rrd rrg rrr rru ruc rud rug ruo rur ruu ucc ucd ucg uco ucr ucu udc udd udg udo udr udu ugc ugg ugo ugr ugu uoc uod uog uoo uor ur- urc urd urg uro urr uru uuc uug uur uuu