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:
5, 6, ['O', '3491', '2665', '3429', 'u', 'C', 'R', 'B', '1111', 'b', 'T', 'Z', '6831', 'V', 'C', 'b', '4451', 'R', 'r']
answer:
Cu


question:
7, 13, ['7405', '2017', '1757', 'Y', '3515', 'J', 'Z', '7447', 'X', '6579', 'o', '489', 'N', '1603', 'N', '273', '1345', '6161', 'x']
answer:
N489o6579X7447Z


question:
3, 20, ['247', 'c', '7401', '7559', '3093', 'n', 'z', '6347', 'j', '7581', '9587', 'W', '653', '4989', 'w', '1585', '1727', '5389', '899', 'V']
answer:

V899538917271585w4989653W95877581j6347zn309375597401