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: 4, 12, ['H', 'r', 'n', 'Y', '173', '9285', '3105', '883', 'n', '8915', '6923', 'S', 'T', 'o', '1639', '8421', 'g']

A: S32965198n38850135829371Y
****
Q: 1, 3, ['r', '5153', 'I']

A: I3515r
****
Q: 4, 12, ['4527', '2693', 'W', '1541', '1597', '779', 'p', 'g', 'a', 'B', '1893', '1477', 'J', 'w']

A:
77413981Bagp97779511451
****