Let $D=3,L=7$ and $A= 8,M=9$ Find the other digits in the sum

Question

$\begin{array}{1 1} S=6,B=1,U=0 \\ S=7,B=2,U=1 \\ S=6,B=4,U=2 \\ S=1,B=1,U=1 \end{array}$