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: 3, 19, ['4057', 'I', 'r', '3485', '1881', 'o', 'p', '8761', '8579', '9481', '4951', '8379', 'v', 'A', '9283', 'm', '9263', '4595', 'J', '4689', '4253', '2369']

J45959263m9283Av83794951948185798761po18813485r