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: 19, 23, ['m', 'c', 'F', 'b', 'A', 'F', 'K', 'x', '5265', '6561', '759', '2745', 'Z', '8705', 'L', 'c', 'Y', 'y', 'X', 'U', '7271', 'v', '2093', 'K', '7237']

2093v7271UX