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, 19, ['6295', 'h', 'v', 'W', 'r', '233', '4573', '1393', '5673', '8435', 'F', 'j', 'W', '797', '8495', '2799', 'B', '313', 'J', '9149', '8525', 'o', 'K', 'k', 'l']

J313B27998495797WjF8435567313934573233rWv