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: 4, 5, ['k', '6781', 'L', 'Q', '7237', '5101', '9549', '7617', 'k', '4131', '6019', 'H', '6721', '3739', '1303']

7237Q