C1212121231123232233131323223313231333132333132322331323331323221111   >>    C121212123112323223313132322331323133313233313232233132333132322111   <<    C1212121231123232233131323223313231333132333132322331323331323221113   >>      C1212121231123232233131323223313231333132333132322331323331323221112   >>