D11213232233132233131121323132313231323123232233132333133313223221   >>    D1121323223313223313112132313231323132312323223313233313331322322   <<    D11213232233132233131121323132313231323123232233132333133313223223   >>      D11213232233132233131121323132313231323123232233132333133313223222   >>