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, 16, ['K', 'a', 'K', '6397', '3917', 'G', '9523', '2335', 'p', 'e', 'p', 'K', '9161', 'Z', 'p', 'Q', '3647', 'A', 'X', 'a', 's', 'S', '7413', 'F', '5019', '1561', '5907']

QpZ9161Kpep23359523G3917