biur[8], birr[6], inru[6], ruin[6], runi[6],
bun[7], bru[7], bur[7], bin[5], ibn[5], brr[5], rui[5], nur[5], run[5], urn[5], rur[5], inr[3],
bu[6], bi[4], nu[4], in[2], ni[2],
