with the data given, there was no benefit

The given data was only a sample. [Yes, I probably should have said this. In retrospect, there are quite a few things I could have done better with my original question.] The actual data has several thousand lines. Yours may still be faster, but then there would be the additional step of eliminating the duplicate combinations.

In reply to Re^4: nested combinations: algorithm advice? by revdiablo
in thread nested combinations: algorithm advice? by revdiablo

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