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, 5, ['l', 'E', '729', 'U', 'z', '9729', '3247']
Example Output: zU927E

Example Input: 13, 14, ['5913', '6823', '5945', 'a', '8191', 's', '5405', 'l', '2515', '3901', 'R', '1575', 'e', 'P', '9231', '39', '6651', 'N']
Example Output: Pe

Example Input: 3, 9, ['6765', 'J', 'O', 'I', '1341', 'B', 'l', '6141', 'G', '3869', 'U']
Example Output:
G1416lB1431IO