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.
23, 28, ['B', 'N', 'm', 'Y', 'U', '2925', 'w', '2227', '6393', '3389', 'V', '8521', 'c', 'u', 'k', '3451', 'n', '4545', '6007', 'g', '5941', '3453', 'P', '1807', 'f', '8075', 'U', 'K']