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, 13, ['o', 'B', '5117', 'h', '3007', '2037', 'j', '2651', 'b', 'b', '8977', 'v', 'U', 'l', '3949', 'e', 'x', '6539', '3663', '1359', '2851']

A: Uv7798bb1562j73027003h7115B
****
Q: 5, 6, ['v', 'g', '5867', '9693', 'T', 'd', 'K', 'x']

A: dT
****
Q: 5, 7, ['F', 'Z', 'F', '7295', 'G', 'f', 'R', '165', '9979', 'M', 'i', 'O', 'I', '2841', 'Q']

A:
RfG
****