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, 12, ['R', '2443', '2973', '155', 'G', 'K', '6853', 'X', '809', '7085', '9669', 'e', 'S', 'K', 'R', '2339', 'S', 'Y', 'O', 'M', '8043', 'Q', 'k', '8017', '4173']

e96697085809