instruction:
In this task, you are given inputs 'i', 'j', and A, where 'i' and 'j' are integers and A is a list. A list is shown by two brackets and comma-separated numbers and characters inside, like ['1', '12', 'l']. You need to concatenate all elements of A from the ith element to the jth element, and then reverse the resulting 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 reverse first and then concatenate.
question:
11, 14, ['c', '6897', 'S', 'J', 'F', '5099', 'b', 'M', 's', 'h', '7725', '3313', 'a', 'o', 'p', '2135', 'I', 'E', 'G', '2273', '9799', '1027', '3431', '6795', 'o', 'k', '3559', 'd']
answer:
oa31335277


question:
11, 12, ['z', 'y', 'R', '6287', '4197', '3293', '3153', 'K', '4947', '9051', 'w', '2343', '8697', '3145', '9297', 'Y', '5789', 'r', '4249', 'Y', 'Z', '5041']
answer:
3432w


question:
1, 13, ['8023', 'x', 'g', 'L', '2463', 'L', 'i', 'D', 'x', 'n', '209', '6599', '1905', 'H', '5309', 'v', 'B', 'M', '7771', '8043', 'J', 'o', '2153', '2973', '5047', '2791']
answer:

50919956902nxDiL3642Lgx3208