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: 12, 18, ['7637', 'U', 'V', 'r', '9605', 'G', '9929', '3511', 'A', 'L', '6235', '3003', '9883', '3529', 'J', 'm', 'Q', 'M', 'e', 'r', '157', 'Y', '9083', '9417', '6337', 'o', '211', '9305', '2257']

MQmJ352998833003