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: 3, 3, ['2047', 'R', '6885', '1243', 'Z']

Output: 5886


Input: Consider Input: 2, 2, ['799', '3533', '7841']

Output: 3353


Input: Consider Input: 7, 11, ['A', 'S', '7985', '1277', '1943', '2391', 'D', 'Y', 'l', 'Y', '8543', 'F', 'E', 'J']


Output: 3458YlYD