buc[8], bud[8], bul[8], lub[8], bum[8], umb[8], cud[7], lud[7], cum[7], muc[7], dum[7], mud[7], lum[7], mul[7], bun[7], bru[7], bur[7], dnu[6], nud[6], lnu[6], lun[6], nul[6], mun[6], cru[6], dur[6], rud[6], urd[6], lur[6], mru[6], mur[6], rum[6], nur[5], run[5], urn[5],
bu[6], ud[5], lu[5], ul[5], mu[5], nu[4],
