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: 5, 7, ['F', 'E', '1851', 'N', '3491', 'L', '517', '3353', '1199', 'z', 'X', '8433', 'I', '5841', '4779', '8527', 'q']

517L3491