cuprum[14],
cups[10], pubs[9], bums[8], spur[7], rums[6],
cup[9], pub[8], bum[7], pur[6], ups[6], mur[5], rum[5], bus[5], mus[5], ums[5], rus[3], sur[3], urs[3],
um[4], ur[2],
