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.
12, 25, ['4289', 'X', 'e', '6449', 'Q', 'L', 'p', '6237', 't', 'n', '8055', '5827', 't', '7963', '1925', 'B', 'l', 'w', '6377', 'b', '1565', 'B', 'G', '7949', '6297', '4129']