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: 4, 17, ['8701', '9299', '1703', '8687', 'S', '8535', 'A', 'H', 'n', 'A', '541', 'C', '3121', '3559', '1213', 'a', 'a', 'q', 'r', 'R']

aa121335593121C541AnHA8535S8687