def four_Sum(nums, target):  
        nums.sort()  
        result = []  
        for i in range(len(nums) - 3):  
            if i and nums[i] == nums[i - 1]:  
                continue  
            for j in range(i + 1, len(nums) - 2):  
                if j != i + 1 and nums[j] == nums[j - 1]:  
                    continue  
                sum = target - nums[i] - nums[j]  
                left, right = j + 1, len(nums) - 1  
                while left < right:  
                    if nums[left] + nums[right] == sum:  
                        result.append([nums[i], nums[j], nums[left], nums[right]])  
                        right -= 1  
                        left += 1  
                        while left < right and nums[left] == nums[left - 1]:  
                            left += 1  
                        while left < right and nums[right] == nums[right + 1]:  
                            right -= 1  
                    elif nums[left] + nums[right] > sum:  
                        right -= 1  
                    else:  
                        left += 1  
        return result  
  
print(four_Sum([1, 0, -1, 0, -2, 2], 0))