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, 3, ['2047', 'R', '6885', '1243', 'Z']
answer:
5886


question:
2, 12, ['W', 'R', 'P', '9411', '179', '5175', '7959', 'o', '4285', 'H', '7535', '3423', 'Q', '7813', '611']
answer:
32435357H5824o959757159711149PR


question:
9, 11, ['M', 'L', '7295', '729', 'H', '4013', '8485', 'p', 'C', '7429', '335', 'A', 'o']
answer:

5339247C