Detailed Instructions: 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.
Q: 14, 16, ['6937', '4339', '7805', 'r', 'f', 'H', '3697', '5555', 'T', 'a', 'Q', 'M', '6391', '5619', 'w', '5557', 'R', 'L', 'b', '6333', 'f', '8499', 'W', '7907', 'p']
A:
7555w9165