bogu[10], gbur[10], gurb[10], borg[8], boru[8], buro[8], rogu[8], rugo[8],
bug[9], gub[9], obu[7], bru[7], bur[7], gur[7], rug[7], bor[5], rob[5], gro[5], ogr[5], oru[5],
bu[6], gu[6], bo[4], go[4], or[2], ro[2],
