def validAnagram(s: str, t: str) -> bool:
        seen = {}
        check = {}
        count = 0
        for letter in s:
                if letter in seen:
                        seen[letter] += 1
                else:
                        seen[letter] = 1
        for letter in t:
                if letter in check:
                        check[letter] += 1
                else:
                        check[letter] = 1
        if seen != check:
                return False
        else:
                return True


def groupAnagrams(strs: list[str])->list[str]:
        """
        :type strs: List[str]
        :rtype: List[List[str]]
        """
        grouped = []
        # Fill first list with matching anagrams
        for i in range(len(strs)):
                for j in range(i+1, len(strs)):
                        if validAnagram(strs[i], strs[j]) == True:
                                if i in grouped:
                                        if j in grouped:
                                                grouped.append(strs[j])
                                else:
                                        grouped.append(strs[i])
                

        return grouped



print(groupAnagrams(["eat","tea","tan","ate","nat","bat"]))