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: 12, 13, ['4769', '865', '3335', 'V', 'r', 'a', '827', 'A', '4927', 'W', '6441', 'x', '3639', 'r', 'O', '2117', '1791', '3529', 'x', 'X', '8429', 'o', 'K', '6977', '429', 'm', '7837']

3639x