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, 7, ['9065', 'Q', 'L', 'U', '6289', '1915', '1747', 'a', 'N', '9259', '4713', '7959']
Example Output: 747151919826ULQ

Example Input: 1, 4, ['6193', '5871', '9871', '4821']
Example Output: 1284178917853916

Example Input: 3, 5, ['9371', '6655', '3999', '6711', '4629', '6097', '6613']
Example Output:
926411769993