Strings in Strings by dianne

import Data.List
m@main=getLine>>=putStrLn.f.words>>m
f(x:y:z)|isInfixOf x y=f$y:z|0<1="NO"
f _="YES"

Note that non-ascii characters in the above source code will be escaped (such as \x9f).

To protect the system from spam, please input your favorite sport (hint: I believe its name must start with 'g', case insensitive)

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