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: 5, 21, ['1913', 'a', '6303', 'r', 'S', 'p', '2437', '1281', '9167', '4981', 'i', '8461', 'E', 'd', 'W', 'S', '8865', 'Q', '9775', '5989', '2659', 'V', '6797']

265959899775Q8865SWdE8461i4981916712812437pS