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:
3, 7, ['H', '689', 'd', '6759', '3531', 'd', '8393', 'N', 'd', 'o', '2377', '4065', '8021', 'c']
answer:
3938d13539576d


question:
9, 10, ['l', '9027', 'D', 'T', '6001', '7127', '2551', '3093', 'i', '3453']
answer:
3543i


question:
5, 8, ['2639', 'A', '3777', '1925', 'f', 'S', 'I', '7633', '2467', '3531', 'c', '9307', 'f', '9495', 'E', '9541', '505']
answer:

3367ISf