D3312121211331322331313232233132333132333132233132313232211312321   >>    D331212121133132233131323223313233313233313223313231323221131232   <<    D3312121211331322331313232233132333132333132233132313232211312323   >>      D3312121211331322331313232233132333132333132233132313232211312322   >>