C1212121231123232233131323223313231333132333132322331323331123221   >>    C121212123112323223313132322331323133313233313232233132333112322   <<    C1212121231123232233131323223313231333132333132322331323331123223   >>      C1212121231123232233131323223313231333132333132322331323331123222   >>