I played with this and came up with a couple of similar ones, though not exactly the same.
The first one has blocks cut 1 3/4" - finishing at 1 1/4". The center units will finish at 4 1/2". It doesn't look too bad.
The second one the pieces are cut 2", and finish at 1 1/2". The centers will finish at 3 x 3 and 1 1/2 x 3".
[ATTACH=CONFIG]568685[/ATTACH] [ATTACH=CONFIG]568686[/ATTACH]
Hope it helps