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: 6, 6, ['9431', '6731', 'A', '5153', 'K', '1567', 'D', 'Y', 'a', 'q', 'x']

Output: 7651


Input: Consider Input: 5, 6, ['7565', '6525', '7421', 'u', '303', '1815', '273', '6725', 'i']

Output: 5181303


Input: Consider Input: 2, 3, ['w', '2721', 'A', 'p']


Output: A1272