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: 6, 7, ['355', '4183', '3563', '8547', '4351', '6841', '5451', 'H', '8035', 'x', '3305', '4233', 'k', '2155', '9987', 'v']
Example Output: 15451486

Example Input: 2, 2, ['799', '3533', '7841']
Example Output: 3353

Example Input: 4, 12, ['2267', '5085', '5385', '4547', '3117', 'm', 'P', 'l', '13', 'D', '2601', 'W']
Example Output:
W1062D31lPm71137454