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: 1, 15, ['4487', '1323', '5287', 'z', 'I', '8497', 'M', '4115', '29', 'm', '7619', '1933', '9043', 'y', '2421', 'I', 'f', '7987', 'I', '7683', 'n']

2421y904319337619m294115M8497Iz528713234487