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.
18, 23, ['2947', 'C', '2687', 'A', '2301', '1333', '7265', 'a', 'a', 'J', 'i', '9635', 'G', '4905', '4219', '9617', 't', '9325', '3689', '7971', 'k', 'T', '7073', '5805', '9683', '8823']