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: 1, 4, ['63', '5429', '5563', '2045', '875', '7163', '1869']

Output: 54023655924536


Input: Consider Input: 5, 7, ['N', 'U', 'L', '1205', '7327', 'b', 'c']

Output: cb7237


Input: Consider Input: 5, 5, ['7341', 'V', 'q', '1581', 'K', '1115', '8413', 'f', '3081', '4935', 'z', 'Y', '6247', '9867', '8603', '1437', '3939', '1931', '8005', 'i', 'S', 'H']


Output: K


