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.

2, 4, ['7887', 'x', '3749', 'N', 'U', '2971']
N3749x

3, 5, ['S', 'c', 'y', '6121', 'r', '3279', '6425']
r6121y

5, 6, ['3365', 'T', '5833', 'w', 'y', '7239', 'O', 'r', '7183', '1795', '5293', '4545']

7239y