D2311233132233131323132322331313311232322331322132313231323223311   >>    D231123313223313132313232233131331123232233132213231323132322331   <<    D2311233132233131323132322331313311232322331322132313231323223313   >>      D2311233132233131323132322331313311232322331322132313231323223312   >>