Jenny Penny, is this what you had in mind? I like playing with puzzles. Hope they're not too big
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This is all my feeble mind could come up with atm. One has the white on the opposite side to the other, and I think the white would have to be cut at 5x2? to make a square block.
oops, sorry for large pics, thought I had double posted for a minute.
I like the second layout as the dark strips make a nice pattern. But I would lay some of these 4 patches a little closer, so that the corners of the colored blocks are meeting. Keep the 4 patch pattern and move them around a little. Will make a very nice quilt.