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:
8, 12, ['C', 'w', 'Q', '8125', '4579', '8495', '363', 'a', 'C', 'T', '7905', '2631']
answer:
13625097TCa


question:
1, 2, ['S', '411', '3257', 'c', '3483', 'i', 'h', 't']
answer:
114S


question:
11, 22, ['8189', '4931', 'P', '4301', 'E', 'j', '2215', 'P', 'y', '9239', '6537', 'y', '651', '5405', 'S', 'q', 'O', 's', '3981', 'm', 'p', '7453', 'C', 'K', 'j', '4229', '1845']
answer:

3547pm1893sOqS5045156y7356