instruction:
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.
question:
2, 4, ['i', '4995', '8615', 'O']
answer:
O86154995


question:
6, 7, ['S', 'R', 'k', 'b', 'd', '9773', '6751']
answer:
67519773


question:
3, 5, ['3333', '1561', '4237', 'X', '1661', '5869', 'K', 'X', '3505', '9215', 'w', 'G', 'H', 'N', 'z']
answer:

1661X4237