D1212132333132233131323222313231323132313331322331323131323133313221231   >>    D121213233313223313132322231323132313231333132233132313132313331322123   <<    D1212132333132233131323222313231323132313331322331323131323133313221233   >>      D1212132333132233131323222313231323132313331322331323131323133313221232   >>