8 ominoes placed.
 1 2 3 3 3 3 3
 1 2 4 4 4 4 4
 1 2 0 0 0 5 6
 1 2 0 0 0 5 6
 1 2 0 0 0 5 6
 7 7 7 7 7 5 6
 8 8 8 8 8 5 6

8 ominoes placed.
 1 1 1 1 1 2 3
 4 4 4 4 4 2 3
 5 6 0 0 0 2 3
 5 6 0 0 0 2 3
 5 6 0 0 0 2 3
 5 6 7 7 7 7 7
 5 6 8 8 8 8 8

Done.  2 solutions found.