D3312121211331313331313232233132322331323132233132313331333312311   >>    D331212121133131333131323223313232233132313223313231333133331231   <<    D3312121211331313331313232233132322331323132233132313331333312313   >>      D3312121211331313331313232233132322331323132233132313331333312312   >>