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: 3, 15, ['O', 'a', '6377', 'R', '1363', '8013', '1923', '4039', 'j', '1365', 'E', 'P', '7225', '7813', 'I']

Output: I31875227PE5631j9304329131083631R7736


Input: Consider Input: 1, 15, ['o', '7861', '5335', '835', 'e', '8077', 'd', '3099', 'F', 'q', 'C', 'F', 'M', '4715', '2669', 'D', '1517', '4361', 'e', 'v', 'P', '6813', 'q', '9075', '9997', '8799', 'L']

Output: 96625174MFCqF9903d7708e53853351687o


Input: Consider Input: 21, 22, ['G', '6417', '4487', '6109', 'R', '6267', '5625', '3845', '5461', '3897', '6087', 'X', 't', '8145', '3553', 'f', 'G', 'X', 'q', '7667', 'w', 's', 'e', '9', 'w', '4389', '7323', '5551', 't']


Output: sw