bund[9], dubn[9], enbu[8], endu[7], eden[5],
buu[9], bud[8], udu[8], bun[7], edu[6], ued[6], dnu[6], nud[6], bee[5], ben[5], den[4], end[4],
bu[6], uu[6], ud[5], be[4], nu[4], de[3], ee[2], en[2],
