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: 14, 21, ['j', '2231', 'j', '2695', 'X', '8449', 'Z', 'W', '9337', 'W', '127', 'D', 'B', '3379', '9225', '4619', 'J', 'M', '8233', 'f', 'g']

gf8233MJ461992253379