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.

[Q]: 3, 3, ['U', '8399', '645', '3165']
[A]: 645


[Q]: 12, 17, ['8471', '9863', '8113', 'v', 'R', '1465', 'Q', '7039', '3795', '1969', '7215', '7069', 'k', 'e', '8401', 's', '961']
[A]: 961s8401ek7069


[Q]: 12, 17, ['8151', '371', '2577', '6779', '8165', '8383', '5977', 'H', '1325', '8585', '6515', '4407', '4207', '8077', 'H', '1657', 'Y', 'd']
[A]:
Y1657H807742074407