C2111111331313232233132333132311331323331333132313232113313121111   >>    C211111133131323223313233313231133132333133313231323211331312111   <<    C2111111331313232233132333132311331323331333132313232113313121113   >>      C2111111331313232233132333132311331323331333132313232113313121112   >>