D3312121211331322331313232233132333132333132233132313232211233311   >>    D331212121133132233131323223313233313233313223313231323221123331   <<    D3312121211331322331313232233132333132333132233132313232211233313   >>      D3312121211331322331313232233132333132333132233132313232211233312   >>