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: 2, 4, ['i', '2555', 'G', '4549', 'a', '7443', '5361']

Output: 9454G5552


Input: Consider Input: 3, 21, ['V', '3661', '3743', 'Y', '3179', 'b', '7097', '3031', '5859', '4095', 'D', 'J', '2337', '4259', '2539', 'I', '9659', 'U', 'G', 'Q', '3145', '177', '9839', 'f']

Output: 5413QGU9569I935295247332JD5904958513037907b9713Y3473


Input: Consider Input: 16, 18, ['3807', '721', 'I', '4933', 'e', 'E', '375', 'w', '3201', 'Y', '7521', 'i', '3283', '5911', '2983', 'f', '8985', '6973', 'H']


Output: 37965898f