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: 4, 5, ['B', 'H', 'y', 'y', 'K']
Example Output: Ky

Example Input: 10, 14, ['q', 'M', 'D', 'x', 'L', 'B', '519', '2767', 'P', '3341', '7817', 'Q', 'd', '3819']
Example Output: 9183dQ71871433

Example Input: 1, 18, ['6137', 'R', 'Q', 'F', 'w', '7079', '4797', '5479', '2507', '7049', '7627', 'h', '787', 'I', 'R', 'i', '2609', '3755', 'C', '2821', 'o']
Example Output:
55739062iRI787h726794077052974579749707wFQR7316