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:
10, 12, ['p', '6907', 'D', 'B', 'z', 'S', '3197', 'b', 'K', 'B', '2925', 'i', 'U', 'y', '5577', '1065', 'e', '7763', 's', '9493']
answer:
i5292B


question:
5, 6, ['A', 'v', 'x', '2047', '5955', 'l', '4845', '1347', 'i', 'm', 'W', 'h', 'w', '4483', '1509']
answer:
l5595


question:
1, 2, ['3381', '7411', '6399', 'S', 'Z', 'u']
answer:

11471833