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.

[EX Q]: 1, 2, ['e', 'F']
[EX A]: Fe

[EX Q]: 2, 2, ['w', '5569', '6229', 'b']
[EX A]: 9655

[EX Q]: 3, 11, ['X', '6847', 'N', '7381', '8339', '5787', '5151', '9033', 'H', 'K', '1169', '7143', 'x', 'H', '6009', '509', 'V', '3051']
[EX A]:
9611KH33091515787593381837N