How can I use action "Excel: Remove duplicate rows" by input multiple columns?

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Hello, dear team:
I want to use the action "Excel: Remove duplicate rows" to remove duplicate rows via all columns of my excel file, which is from column A to V.
What is correct way to define the columns in the action?
It is not clearly clarified via support page https://help.catalytic.com/docs/excel-remove-duplicate-rows/
Below is my input of the action which comes cross a error.

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