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: 5, 5, ['m', '1577', '7895', 'l', 'K', '2981', '8677']

Output: K


Input: Consider Input: 6, 19, ['1247', 'w', '6657', '3757', '9313', 'u', '5655', 'n', '9559', '4017', '9041', 'n', 'w', '155', 'C', 'N', '6351', '9761', '5701', '3857', '6167', 'u']

Output: 107516791536NC551wn140971049559n5565u


Input: Consider Input: 2, 23, ['F', 'K', '8631', '9399', '2959', '8703', 'C', '1333', '2301', '4343', '5283', '7645', 'o', '1961', '7239', 'o', 'w', 'j', '9495', 'f', '5517', '441', '4637', 'x', '9967', 'V', '7705']


Output: 73641447155f5949jwo93271691o54673825343410323331C3078959299391368K