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, ['n', '8897', '6611', '2857', 'p']
Example Output: p758211667988

Example Input: 1, 3, ['a', '8801', '2379']
Example Output: 97321088a

Example Input: 7, 25, ['i', '8239', '5339', '2089', 'h', '1095', 'W', 'k', 'e', 'j', '5245', '2343', '6743', 'c', 'p', 'v', 'R', '1417', '1355', '5541', 'Q', '5665', '7817', '6509', '1117', '6945']
Example Output:
7111905671875665Q145555317141Rvpc347634325425jekW