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: 14, 21, ['Q', 'k', '6715', 'b', 'C', '8779', '8009', '7167', '8929', 'N', 'e', 'G', '3909', 'u', 'j', '7401', '1133', 'D', 'c', '6423', 'H', 'J', 'h', 'c', 'a', '777', '2259']

H6423cD11337401ju