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, 6, ['x', 'o', '4399', '1001', '9267', 'U', 'r', 'e', '6415', '3811', '5385', 'v', 'E', 'q', '6033', 'm', 'i', 'O', 'W', 'R', '4017', 'I', 'T', 'D', '1349', '7213', '9619']

Output: U


Input: Consider Input: 1, 2, ['A', '8103', '7829']

Output: 3018A


Input: Consider Input: 5, 15, ['G', 'U', 'S', 'p', '5855', 'Z', 'j', '4719', '8267', 'z', '3913', '739', 'D', 'w', 'H', '3903', 'e']


Output: HwD9373193z76289174jZ5585