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: 2, 19, ['m', '963', 'o', 'U', 'p', 'J', '909', 'P', '8499', 'G', '1847', '3649', 'S', '125', 'B', 'G', '2257', '4601', 'j', 'C', 'W', 'D', '4699', '6625', 'G', '6535']

j46012257GB125S36491847G8499P909JpUo963