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: 5, 18, ['2845', 'X', '7617', 'C', 'o', 'b', '1313', 'a', '23', 'A', 'X', '299', 'F', '1723', 'i', 'v', 'J', '25', '4229', 'c', 'Z', 'O', 'a', '5619', '3625', 'U', '2117', 'W']

25Jvi1723F299XA23a1313bo