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.

Example Input: 10, 13, ['v', '9787', '3803', 'P', 'M', '7127', '7845', '6369', 'u', '8715', 'I', '7491', '6593', '459', '1747', 'L']
Example Output: 39561947I5178

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

Example Input: 8, 20, ['m', 'L', '4771', '3369', 'X', '6993', '7581', 'H', 'F', 'S', '4153', '105', 'T', '8637', '2379', 'O', 'f', '4751', '1479', 'u']
Example Output:
u97411574fO97327368T5013514SFH