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: 6, 19, ['3667', '9517', '9527', 'j', '1867', 'f', '7465', '1837', 'u', 'T', '5983', '2891', 'W', 'D', '7139', 'K', 'u', 'F', 'J', 'M', '4105', 'e', 'y', 'x', '8531', '1255']

JFuK7139DW28915983Tu18377465f