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: 8, 12, ['C', 'w', 'Q', '8125', '4579', '8495', '363', 'a', 'C', 'T', '7905', '2631']

Output: 13625097TCa


Input: Consider Input: 4, 4, ['Z', '7465', 'J', 'W']

Output: W


Input: Consider Input: 3, 9, ['1047', '8491', 'j', 'u', '7513', '5929', 'B', 'W', 'P', '4675', 'Y', 'X', '5811', '2383']


Output: PWB92953157uj