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.

Example Input: 2, 2, ['z', '3345', 'l', '2657', 'J', '4313', 'K', '5307', '9087']
Example Output: 5433

Example Input: 30, 30, ['7149', 't', 'W', '5821', '1189', '4423', 'T', 'x', '5131', '9015', 'H', 'k', 'J', '9951', '5697', '1953', 'X', '8691', '3581', '7319', '6977', '8031', '6179', '2109', 'F', 'Y', 'G', '1065', 'y', '869']
Example Output: 968

Example Input: 10, 16, ['m', 'B', '2271', 'V', '6959', 'F', 'Z', 'p', '7861', 'Z', 'Z', 'Q', 'T', '3275', 's', 'k', '3473', 'H', '2655']
Example Output:
ks5723TQZZ