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: 10, 20, ['683', 'x', 'Q', 'S', '7419', 'O', 'u', 'r', 'b', 'w', '3453', '737', 'p', 'x', '3689', 'j', '9597', 'Z', 'I', '4963', 'Q', 'S', '1119', '3623', 'v', 's', '2249']

4963IZ9597j3689xp7373453w