mull[8], flut[8], luft[8], slum[7], fuss[7], stuf[7], muss[6], sums[6], must[6], muts[6], lust[5], sust[4],
ulm[6], mus[5], ums[5], mut[5], lus[4],
um[4], ul[3], st[2], tu[2],