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: 4, 12, ['I', 'G', 'u', 'S', '9615', 't', 'p', 'P', 'R', 'v', '8819', '5379', 'I', '1165', '4545', '3117', '1577', 'y', 'W', 'R', 'O']

Output: 97359188vRPpt5169S


Input: Consider Input: 2, 5, ['l', 'E', '729', 'U', 'z', '9729', '3247']

Output: zU927E


Input: Consider Input: 11, 11, ['9211', '1467', 'q', 't', 'C', '5105', '8499', '2675', '1519', '8747', 'U', '2717', '2655', '8169']


Output: U