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: 2, 3, ['X', '8243', '1209']

A: 90213428
****
Q: 7, 18, ['s', 'a', 'q', '6573', '7757', '7229', '9149', '7563', '2171', 'L', 'F', 'S', '4337', '3071', 'Q', 'A', '6987', '2529', '2489', 'y', '359', '3065', 'h']

A: 92527896AQ17037334SFL171236579419
****
Q: 5, 5, ['9337', '1509', '9309', 'o', 'Y', 'a', '5155', 'F', '5031', 'R', 'o', '4021', '2559', 'Z', 'K']

A:
Y
****