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: 13, 20, ['6307', 'E', '4551', '3387', 'q', '5365', '5857', '2449', 'j', '729', '7761', '749', '9635', 'd', '3985', '7669', 's', '9801', '2467', '4529', '6759']

452924679801s76693985d9635