The blue boxes below should be in numeric order and form a backwards "D". (Boxes labelled "A" should be in the first column; boxes labelled 'B' should be in the second; arrows indicate the correct alignment.)
B 2 =>
A 1 =>
B 4 =>
<= A 3
B 6 =>
<= A 5
<= A 7
B 8 =>
B 10 =>
A 9 =>