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:
2, 4, ['o', '5393', 'p', 'h', '5617', 'F', 'I', 'a']
answer:
hp3935


question:
4, 5, ['S', 'S', 'L', '7199', '3259', '8515', '8657', '8201', 'V']
answer:
95239917


question:
2, 2, ['2207', '1519', '9159', 'h', 'a', '2509', '8107', 'A']
answer:

9151