D3312121211331322331313232233132333132333132233132313331333133322221   >>    D331212121133132233131323223313233313233313223313231333133313332222   <<    D3312121211331322331313232233132333132333132233132313331333133322223   >>      D3312121211331322331313232233132333132333132233132313331333133322222   >>