Thanks for the comment.
But if I try using your code, I get the same result as mine. Every couple has the same number of occurrences, and that just isn't possible. I'm sorry if I cannot make it more clear, is just I don't know how to explain that.

In reply to Re^2: Problem in counting the occurrences of a string in a text file by findtheriver
in thread Problem in counting the occurrences of a string in a text file by findtheriver

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