frug[8], birg[7], burg[7], grub[7], birr[6], girr[5], urig[5], gurr[5],
fug[7], gib[6], bug[6], ruf[6], brr[5], gur[4], dir[3], irr[3], dur[3],
bi[4], du[2], ud[2], ui[2], ur[2],
