D11213232233132233131121323132313231323123232233132333133313112211231211   >>    D1121323223313223313112132313231323132312323223313233313331311221123121   <<    D11213232233132233131121323132313231323123232233132333133313112211231213   >>      D11213232233132233131121323132313231323123232233132333133313112211231212   >>