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.
21, 28, ['A', 'C', 'r', '4727', 'Q', '1151', '1239', '759', 'f', '917', '5585', 'u', '9037', 'Z', 'O', '4291', 'J', '3411', '9927', '1075', 'D', '6413', '8135', 'w', '3167', 'm', '2569', 'y']