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.

Input: Consider Input: 7, 12, ['4563', '7657', '4657', '1145', 'A', 'e', 'a', '5429', '3323', 'I', '569', 'R', '5013', 'U', 'v', 'l', 'h', 'z', 'e', 'D', 'n', 'h', 'h', '4673', '973']

Output: R965I32339245a


Input: Consider Input: 4, 11, ['H', 'E', 'l', '5011', 'R', '2693', '1081', '9825', '8503', '213', '2717', '8335', '3355', 'd', '7727', '3417', 'R', 'V', 'e']

Output: 71723123058528918013962R1105


Input: Consider Input: 6, 7, ['N', '6601', 'N', 'S', 'x', 'y', '2873', 'B']


Output: 3782y