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: 17, 19, ['f', '8827', 'z', 'c', '4237', 's', 'e', 'U', '4391', 'o', '83', 'H', 'W', '3115', 'O', '7387', '8873', '487', '5601', '8645', 'N']

56014878873