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: 3, 15, ['7817', '6047', 'F', '9261', '7513', 'w', 'H', '5369', 'a', 'E', 'X', '5221', 'h', '2487', '117', 'w', '7929', '9201']

1172487h5221XEa5369Hw75139261F