i want to use program for txt file

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Saleh 2022-12-8

关闭： John D'Errico 2022-12-8

i want to use program to answer mentioned question after uploading the text file.

How many words are there in the text file?

How many words contain only three letters?

How many words begin the letter A?

How many words contain the letters E and A?

Find the frequency to all letters A-Z as shown below.

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