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

Output: t5194inr5514X


Input: Consider Input: 3, 8, ['b', 'y', '8779', '3949', 'c', 'a', '111', '6649']

Output: 9466111ac94939778


Input: Consider Input: 2, 6, ['l', '7183', '8929', 's', 'p', 'n']


Output: nps92983817