C2122121212121133132213231313231333131323223313232313231323113221   >>    C212212121212113313221323131323133313132322331323231323132311322   <<    C2122121212121133132213231313231333131323223313232313231323113223   >>      C2122121212121133132213231313231333131323223313232313231323113222   >>