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:
1, 6, ['i', '8793', 'i', 'E', 'P', 'h', 'v', '4901', 'I', 'E', 'R', '35', '9175', 'G', 'C', '395', '7333', 'q']
answer:
hPEi3978i


question:
5, 6, ['J', '6957', 's', 'l', 'C', 'o', 'H', 'u', 'g', 'P', 'N', 'v', 'S', '6145', 'o', 'z', 'B', 'o', 'E', 'f', '817', 'I', 'k', 'I', '7331', 'x']
answer:
oC


question:
12, 25, ['8229', '5913', '3663', 'I', '6955', 'v', '2715', 'G', '5731', '2705', 'J', 'h', '9633', '4497', 'R', 'A', '5199', 'd', 's', '2377', '5853', 'I', '4665', '6507', 'A', '5907', 'Z']
answer:

A70565664I35857732sd9915AR79443369h