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: 2, 7, ['Q', '373', '2783', 'W', '2291', '471', '2363', '9401', '1229', '1447', '7687', 'L', '7937', 'N', 'W', '3025', 'r', '5193', '7537']

23634712291W2783373