Chapter 172: The password?

"If I remember correctly, in the old phones, the number '1' in it contains all the punctuations and the numbers contains the letters in a partition that would contain three letters except for numbers '7' and '9' since they contain the letter 'p,q,r,s' and 'w,x,y,z' respectively. The other extra keys is the '*' and the '#' which could change the case in which the letters are in and a few more functions. Don't forget the '0' key that is for spaces and the underscore." I thought to myself as I looked at the first line again.

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