buf[11], pfu[10], puf[10], fru[9], fur[9], ruf[9], buc[8], pub[8], bun[7], cup[7], puc[7], bru[7], bur[7], pun[6], cru[6], nur[5], run[5], urn[5], wun[5],
fu[8], uf[8], bu[6], nu[4], wu[4],
