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: 19, 20, ['f', '7029', '8395', '4647', 'n', '3747', 'L', '2303', '4325', '9841', '4983', '7081', '1327', 'P', 'S', '9737', 'o', 'e', 'L', '5469', 'y', '917', 'W', '7099', '2919', 'i']

5469L