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: 9, 16, ['6257', 'A', 'f', '4029', '4543', 'x', '6305', '6311', '7771', '6935', 'M', '5771', '1961', '9995', 't', 'c', '3505', 'u']

ct999519615771M69357771