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: 2, 3, ['6875', 'D', 'r']
Example Output: rD

Example Input: 3, 3, ['5819', '3317', '451', '5811']
Example Output: 154

Example Input: 4, 9, ['G', '7859', 'n', '3675', '295', 'h', '3981', 'j', 'Q']
Example Output:
Qj1893h5925763