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, 6, ['Q', '4571', 'S', 's', '5669', '7689', '3335', 'C', 'J', '6565', '3031', 'G', '9817', 'O', '9691', '9069', 'u', '5965', 'R']
Example Output: 98679665sS1754

Example Input: 1, 2, ['y', 'n', 'a', '4367', 'Q', 'S']
Example Output: ny

Example Input: 5, 13, ['i', 'z', '6013', 'A', 'e', 'D', '4827', '3421', 'N', '821', '8551', '3719', 'u', 'c', '9817', 'd', '2011']
Example Output:
u91731558128N12437284De