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, 4, ['4887', 'N', 'y', '2813', 'C', 'J', 'v', '3199']
answer:
3182y


question:
2, 3, ['T', '2161', '227']
answer:
7221612


question:
8, 16, ['9461', 'l', 'P', '8115', '315', '8667', 'O', 'X', '2655', 'k', 's', '6379', '469', '243', '1457', 'I', '5317', '3593', 'l', '6499', '4167', 'C', '3983']
answer:

I75413429649736sk5562X