D331313123121133131333131322331313331323331313232233132333132313232231221   >>    D33131312312113313133313132233131333132333131323223313233313231323223122   <<    D331313123121133131333131322331313331323331313232233132333132313232231223   >>      D331313123121133131333131322331313331323331313232233132333132313232231222   >>