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, ['r', '4971', 'w', '9773', 'X', 'V', '4585', 'x', 'B', 'T', '4057', 'l', 'w', '7789', 'E', 'w', '2125', '2607', 'G', '65', 'K']

G26072125wE7789wl4057TBx4585VX9773w