Hello there,
So I would like to count the number of occurrences some index presents itself regarding one letter.
Let me make this more clear, I have the following table:
A 1
A 1
A 2
B 1
B 2
And I want the output to tell me something like - For the letter "A" I have two occurrences of the number 1 and one occurrence of the number 2. For the letter "B" I have one occurrence of the number 1 and one occurrence of the number 2.
Thank you very much for your time!
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