b2t: block 4 from block 6 onto table
b2t: block 6 from block 1 onto table
b2t: block 1 from block 0 onto table
b2t: block 0 from block 5 onto table
b2b: block 5 from block 2 onto block 4
b2b: block 2 from block 3 onto block 5
t2b: block 3 from table onto block 1
t2b: block 6 from table onto block 3
t2b: block 0 from table onto block 6
