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, ['6893', 'o', '2661', 'T', 'w', 'u', 'k', '7727', 'X', '9861', '9125', 'o', 'x', '9109']

Output: o52191689X7277kuwT1662o3986


Input: Consider Input: 6, 12, ['z', 'E', '6097', 'G', 'Z', 'X', '4155', 'r', 'n', 'i', '4915', 't', 'P', 'A']

Output: t5194inr5514X


Input: Consider Input: 5, 9, ['2815', '333', 'P', 'A', '3797', 'W', '3621', 'p', 'u', '4835', 'B', 'u', 'H', '4357']


Output: up1263W7973