- import re 
- sentence = "The Batman has never shown his true identity but has done so much good for Gotham City" 
- verb = re.findall(r'\bhas\s(?:(?!\bhas\b)[^,."]){0,50}?\bdone\b', sentence) 
- print(verb) 
-   
				aW1wb3J0IHJlCnNlbnRlbmNlID0gIlRoZSBCYXRtYW4gaGFzIG5ldmVyIHNob3duIGhpcyB0cnVlIGlkZW50aXR5IGJ1dCBoYXMgZG9uZSBzbyBtdWNoIGdvb2QgZm9yIEdvdGhhbSBDaXR5Igp2ZXJiID0gcmUuZmluZGFsbChyJ1xiaGFzXHMoPzooPyFcYmhhc1xiKVteLC4iXSl7MCw1MH0/XGJkb25lXGInLCBzZW50ZW5jZSkKcHJpbnQodmVyYikK