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.

1, 9, ['3207', 'E', 'h', 'h', 'I', '4019', 'v', 'O', 'r', 'Q', '9685', 'I', '8665', '7037', '5181', 'v', 'W', 'a', 'p', '2959', 'f', 'H', '3121']
rOv9104IhhE7023

5, 5, ['7991', '8029', '9605', 'u', '9539', 'q', '3789', 'i', '8639', '7477']
9359

4, 7, ['4749', 'h', '6885', '6911', '2167', '1379', '7931', 'O', '2157', '7819', 'g', 'b', 'U', '4481', '5187', 'b', 'T', '2915', '6313', '3563']

1397973176121196