C2122121212121133132213231313231313231323223313231322331323331323232132313111   >>    C212212121212113313221323131323131323132322331323132233132333132323213231311   <<    C2122121212121133132213231313231313231323223313231322331323331323232132313113   >>      C2122121212121133132213231313231313231323223313231322331323331323232132313112   >>