D3312121211331313331313232233132322331323132233132313231321123232311   >>    D331212121133131333131323223313232233132313223313231323132112323231   <<    D3312121211331313331313232233132322331323132233132313231321123232313   >>      D3312121211331313331313232233132322331323132233132313231321123232312   >>