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:
4, 10, ['4619', '1689', '1987', '9711', 'K', 'a', '9193', 'y', 'c', 'O', 'u', 'h', 'v', 'o', '927', '2323', 'Z', '5115']
answer:
Ocy9193aK9711


question:
2, 11, ['d', 'd', '3453', '8245', '6639', '3287', '5797', '3497', '1017', '4911', 'H', 'c', '5347', 'W']
answer:
H49111017349757973287663982453453d


question:
7, 8, ['5883', 't', 'p', '2829', 'D', '7911', 'f', 'N', 'y', '7541', '2269', '2101', '3099', 'O', 'u', 'Y', '9587', '1007', 'r', '1429', 'C', 'i', '6839']
answer:

Nf