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, 9, ['2731', '4987', '2927', '8573', 'O', '8349', '9507', 'K', '7307', 'V']

Output: 7037K70599438O3758


Input: Consider Input: 13, 15, ['I', 'y', '3037', 'i', 'I', 'x', 'r', 'i', 'g', '1141', 'z', '8639', 'v', 'p', '7901', 'A', 'e', '7599']

Output: 1097pv


Input: Consider Input: 13, 16, ['2851', 'C', 's', '1273', '3141', 'g', 'J', '2091', 'd', 'J', '1945', 'b', 'x', '4953', 'M', 'S', '325', '3869', 'b', 'Y', '9805']


Output: SM3594x