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:
9, 10, ['l', '9027', 'D', 'T', '6001', '7127', '2551', '3093', 'i', '3453']
answer:
3543i


question:
1, 3, ['F', 'R', 'v', 'X', '7135', 'V', '8597', '5153', 'T', '4513', 'B', '7089', 'Q', '3621', 'o', 'W', '4555', '9307', '9997', 'I', '1029', 'c', '363', 'G']
answer:
vRF


question:
12, 14, ['X', '8197', 'v', 'p', 'L', '7143', '6569', '4757', 'c', 'N', '6241', '5559', 'g', 'S', '9179', '6863', 'K']
answer:

Sg9555