C1212121231123232233131323223313233313233313223313132333132313132322331   >>    C121212123112323223313132322331323331323331322331313233313231313232233   <<    C1212121231123232233131323223313233313233313223313132333132313132322333   >>      C1212121231123232233131323223313233313233313223313132333132313132322332   >>