INORDER=
   b0
   b1
   b2;
OUTORDER=
   l7
   l6
   l5
   l4
   l3
   l2
   l1
   l0;
l0=!b0&!b1&!b2;
l1=!b0&!b1&b2;
l2=!b0&b1&!b2;
l3=!b0&b1&b2;
l4=b0&!b1&!b2;
l5=b0&!b1&b2;
l6=b0&b1&!b2;
l7=b0&b1&b2;