coca[11], orca[8], core[8], acre[7], ergo[6], oger[6], arge[5], gare[5], rage[5],
car[6], cer[6], ego[5], geo[5], gor[5], arg[4], gar[4], rag[4], erg[4], ger[4], reg[4], are[3],
go[4], ar[2], er[2], re[2],
