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:
5, 8, ['g', 'a', '2875', '9581', '3263', '3103', 'J', 'b', 'h']
answer:
bJ30133623


question:
2, 2, ['9085', '5983', '3197', 'C']
answer:
3895


question:
9, 18, ['A', '4055', 'h', 'e', '8743', 'D', 'k', 'E', 'f', '8827', '709', 'k', '1733', 'W', '6369', '6519', '2279', '45', '4333', 'B', 'y']
answer:

54972291569636W3371k9077288f