firm[9], frug[8], birg[7], burg[7], grub[7], urig[5],
bim[7], fug[7], bum[7], gib[6], bug[6], ruf[6], mir[5], mur[5], rum[5], gur[4],
bi[4], im[4], mi[4], um[4], ui[2], ur[2],
