D21221311331322132322331322331322132313231323133311232313232111   >>    D2122131133132213232233132233132213231323132313331123231323211   <<    D21221311331322132322331322331322132313231323133311232313232113   >>      D21221311331322132322331322331322132313231323133311232313232112   >>