Given the task definition and input, reply with output. 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.

12, 15, ['H', 'n', '7127', '3249', '9197', 'B', '7139', 'Y', 'q', 'A', '6715', 'p', '5563', '573', '9873', '1113', '2973', 'A', 'D', '7959', '7717', 'k']

98735735563p