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, 8, ['4363', 'N', 'J', 'Z', '4447', 'P', '6839', 'Q', '85', 'W', 't', 'C', 'X', '3879', 'X', 'Q']
answer:
Q6839P4447ZJN


question:
8, 10, ['A', 'C', '6441', '275', 'O', 'v', '5787', 'E', 'h', '6821', 'x', '2819', 'N', '3909']
answer:
6821hE


question:
3, 9, ['l', 'i', 'e', '4567', '9959', 'e', 'Q', 's', 'C', '529', '797', '9795', '7887', '83', '3063', '1475', '1553', 'd', '4973', 'i']
answer:

CsQe99594567e