This morning I finally solved it. Once I had sat down and worked on the problem for the second time it worked itself out in about ten minutes (that is not counting the two days I have spent thinking about it).
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This morning I finally solved it. Once I had sat down and worked on the problem for the second time it worked itself out in about ten minutes (that is not counting the two days I have spent thinking about it).
This is what I came up with and I think it's right.