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.

1, 2, ['3303', '6127']
72163033

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']
R965I32339245a

1, 14, ['b', '3593', '1999', '1491', '4271', 'k', 'k', '3255', 'n', 'g', '1217', '6871', 'H', '6267', 'M', 'N', '943', 'x', '4383']

7626H17867121gn5523kk1724194199913953b