Please enable JavaScript to use regex101
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Reg
ular
Ex
pressions
101
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Regular Expression
r"
(?:(?:(?!\1)()|\1 )(?:(?!\2)()fat|(?!\3)()cat)){2}
"
g
Input 1
1
New
My fat cat is sleeping. My cat is lazy. My aunt is fat.
Substitution
My fat cat is sleeping. My cat is lazy. My aunt is fat.