Basic Python Solution for Beginners using set
Code\n\nclass Solution:\n    def maxLength(self, arr: List[str]) -> int:\n        l=[set()]\n        for i in arr:\n            if len(set(i)) < len(i):\n      
# Code\n```\nclass Solution:\n    def maxLength(self, arr: List[str]) -> int:\n        l=[set()]\n        for i in arr:\n            if len(set(i)) < len(i):\n                continue\n            i = set(i)\n            for j in l:\n                if i & j:\n                    continue\n                l.append(i | j)\n        m = 0\n        for i in l:\n            if m < len(i):\n                m = len(i)\n        return m\n        \n        \n```
['Array', 'String', 'Bit Manipulation', 'Python', 'Python3']