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: 1, 1, ['N', 'J']
Example Output: N

Example Input: 1, 12, ['6587', '2431', 'C', '5663', '1273', 'g', '3685', 'O', 'X', '8043', 'F', '4979', '1785', 'r', '7229', '1575', 'T', 's', 'l', '1947', 'r', 'j', '4195', 'V', 'o', 'Y', 'U']
Example Output:
9794F3408XO5863g37213665C13427856