Palindrome Grouping

You are given a list of strings. Write a program to group these strings such that each group contains strings that can be rearranged to form a palindrome. Print the grouped strings as lists within a list. Example: Input: ['civic', 'ivicc', 'hello', 'olleh', 'aabb', 'bbaa'] Output: [['civic', 'ivicc'], ['hello', 'olleh'], ['aabb', 'bbaa']] (Order of groups and strings within groups doesn't matter)