C1212121231123232233131323223313233313233313223313231323132322333231   >>    C121212123112323223313132322331323331323331322331323132313232233323   <<    C1212121231123232233131323223313233313233313223313231323132322333233   >>      C1212121231123232233131323223313233313233313223313231323132322333232   >>