Yes, you can use different column names No, I don't think this method can be done in a loop, however, there may be other ways to solve this which might be applied in a loop, but it may depend on the...
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Yes, you can use different column names No, I don't think this method can be done in a loop, however, there may be other ways to solve this which might be applied in a loop, but it may depend on the column names and the relationship between the pairs of column names, e.g. A and A1, B and B1, etc.