D2311233132233131323132322331313311232322331322132313231323123221   >>    D231123313223313132313232233131331123232233132213231323132312322   <<    D2311233132233131323132322331313311232322331322132313231323123223   >>      D2311233132233131323132322331313311232322331322132313231323123222   >>