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, ['I', 'k', '8187', 'm', 'x', '9985', '7685', 'I', '3571', '8453', 'I', '7493', '507', 'g', '7525', '5145', 'j', 'M', 'D', '4393', '9307', 'V', '7785']

5077493