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, 10, ['V', '7549', '4639', '3825', '4619', 'w', '7667', '557', 'L', 'z', '1883', 'k', 'j', 'o', 'p', '3945', 'u', 'l', '5637']
Example Output: zL7557667w9164528393649457

Example Input: 2, 22, ['43', 'V', '469', '8463', 'E', 'J', 'N', '4049', 'f', '8529', 'R', 'P', 't', '6217', 'v', '8311', 'R', '2055', 'g', '6011', '2567', 'O', 'r', 'K', '8757', 'l', '9205', 'k', '6959']
Example Output: O76521106g5502R1138v7126tPR9258f9404NJE3648964V

Example Input: 18, 21, ['3067', '5393', 'e', '2071', '3485', 'U', 'v', '935', 'w', 'Z', '8981', '8389', '4769', 'q', 'a', 'r', 'j', 'r', 'C', '7143', 'G']
Example Output:
G3417Cr