D331212121133131333131323223313232233132313223313132313231231211   >>    D33121212113313133313132322331323223313231322331313231323123121   <<    D331212121133131333131323223313232233132313223313132313231231213   >>      D331212121133131333131323223313232233132313223313132313231231212   >>