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: 18, 21, ['M', 'L', 't', '6265', 'S', '5291', '4649', '3075', '7967', 'P', 'T', 'm', 'j', '9431', '8383', '3467', '23', 'C', '8489', 'a', 'o', '9549', 'C', '939', '8845']

oa8489C