bug[9], gub[9], bul[8], lub[8], gul[8], ulg[8], bun[7], gnu[7], bru[7], bur[7], gur[7], rug[7], lnu[6], lun[6], nul[6], lur[6], lwu[6], ulw[6], nur[5], run[5], urn[5], wun[5],
bu[6], gu[6], lu[5], ul[5], nu[4], wu[4],