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.

3, 11, ['B', 'V', 'S', '7211', 'U', '7773', '4803', 'z', '9371', 'l', 'S', '1559', 'l', '9203', '9919', 'M']
Sl1739z30843777U1127S

2, 13, ['o', 'B', '5117', 'h', '3007', '2037', 'j', '2651', 'b', 'b', '8977', 'v', 'U', 'l', '3949', 'e', 'x', '6539', '3663', '1359', '2851']
Uv7798bb1562j73027003h7115B

7, 9, ['s', '3175', '1431', 'a', 'u', '7265', 'N', 'H', '1217', 'x', 'u', 'a', 'c', 'n', 'b', 'J', 'B', '6907', 'D', '6691', 'N', '7959', 'm']

7121HN