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, 7, ['J', '701', 'm', '8837', 'b', 'd', '5911', 'y', '8031']

Output: 1195d


Input: Consider Input: 3, 4, ['19', '2669', 'v', 'd', '2221', '4219', 'A', 'P', '7499', 'z', 'm', 'l', '427', 'u']

Output: dv


Input: Consider Input: 2, 6, ['7511', '9097', '3125', '443', '9561', '757', 'S', '1961', '8477', '5737', '8515']


Output: 757165934452137909