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: 1, 12, ['2851', 'v', '8871', 'Z', '2227', 'm', 'z', 'B', 'v', '765', '1435', 'V', 'X', 'k', '5955', '2549']

Output: V5341567vBzm7222Z1788v1582


Input: Consider Input: 7, 8, ['1601', 'M', '4289', 'n', 'r', '8973', 'F', 'Y', 'v', '3357']

Output: YF


Input: Consider Input: 3, 3, ['G', '3575', 'a', '8857', '4473', '8549', '3497']


Output: a