D11213232233132233131121323132313231323123232233132333133313232221211   >>    D1121323223313223313112132313231323132312323223313233313331323222121   <<    D11213232233132233131121323132313231323123232233132333133313232221213   >>      D11213232233132233131121323132313231323123232233132333133313232221212   >>