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, 6, ['A', 'v', 'x', '2047', '5955', 'l', '4845', '1347', 'i', 'm', 'W', 'h', 'w', '4483', '1509']
answer:
l5595


question:
2, 2, ['z', '3345', 'l', '2657', 'J', '4313', 'K', '5307', '9087']
answer:
5433


question:
4, 8, ['R', '9783', 'A', 'D', 'L', '3511', '3715', 'A', 'z', 'i', 'l']
answer:

A51731153LD