How do I go about this problem? I understand that I must define what is punctuation $([^$a$-$zA$-$Z$)$ but then am confused how to remove $\backslash$r

$.$ For making it lowercase, do I just use the inbuilt function?

$\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_\_$

$(()/())/($r$)()/()$

with space, convert to lowercase, replace all punctuation with space, break into words, and return the list

of words.

$\%$ CONSULT

$\%$Your code here

$($L$)/($ alice $($x$),$ length $($x$,$L$)),$L$>30560,$L