D11213232233132233131121323132313231323123232233132333133313231313231221   >>    D1121323223313223313112132313231323132312323223313233313331323131323122   <<    D11213232233132233131121323132313231323123232233132333133313231313231223   >>      D11213232233132233131121323132313231323123232233132333133313231313231222   >>