Definition: In this task, you are given inputs i, j, and A, where i and j are integers and A is a list. You need to find all elements of A from the ith element to the jth element, reverse the order in which they occur, and then concatenate them to output the resultant 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 concatenate the elements and then reverse the string.
Input: 12, 16, ['R', 'f', 'k', '5099', '5713', '3027', '8985', '1275', 'N', '6357', '4917', '9869', '8451', '8815', 'z', 'g', 'K', 'D', '1173', 'b', 'B', '1431']

gz881584519869