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: 16, 20, ['1699', '5729', '873', '1617', 'C', 'o', 'z', '4161', '9165', '4497', 'F', 'i', '5525', 't', '103', '9253', 'Z', '4991', 'z', '913', '3357', 'D', '3779', 'F', '7099', '241', 'E', '7887']

913z4991Z9253