birg[7], burg[7], grub[7], urig[5], huri[5],
gib[6], bug[6], buh[6], hub[6], ihr[4], hui[4], gur[4], hur[4], ruh[4], uhr[4], dir[3], dur[3],
bi[4], hi[3], hu[3], uh[3], du[2], ud[2], ui[2], ur[2],
