burli[8], rillt[7], rutil[6],
bill[8], blut[7], bult[7], rill[6], birr[6], till[6], brut[6], trub[6], irrt[4],
brr[5], bit[5], irr[3],
bi[4], ul[3], ti[2], ui[2], ur[2], tu[2],
