In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting string. 'i' and 'j' will be non-negative, and will always have a value less than the length of A. 'i' will always be less than 'j'. Perform the operations in order, i.e., do not reverse first and then concatenate.

Input: Consider Input: 4, 9, ['2731', '4987', '2927', '8573', 'O', '8349', '9507', 'K', '7307', 'V']

Output: 7037K70599438O3758


Input: Consider Input: 10, 14, ['8619', '1037', '6899', '8381', 's', '6757', 'a', '7261', '951', '3047', 'r', 'W', 'O', '31', '2943', '2351', '7637', '8501', 'K', '9131', '599', 'G', 'k', 'a', '8299', 'S', 'G']

Output: 13OWr7403


Input: Consider Input: 17, 19, ['9873', 'm', 'E', 'm', 'L', '4031', '5555', '5661', 'J', 'G', '8933', '1943', '1431', 'c', '2045', 'B', '967', 'f', '4197', 'x', 's', '8623']


Output: 7914f769