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, 25, ['l', '5183', 's', 'h', 'l', 'k', 'j', '7197', 'g', '9545', '7999', '3389', '3935', 'd', 'e', '6663', 'y', '7145', 'U', 'j', 'G', 'j', '2719', 'S', 'K', 'W', 'a', '2221', 's', 'u']

KS2719jGjU7145y6663ed3935338979999545