D13231123313133313223313132233131323221323132313132333132313231321   >>    D1323112331313331322331313223313132322132313231313233313231323132   <<    D13231123313133313223313132233131323221323132313132333132313231323   >>      D13231123313133313223313132233131323221323132313132333132313231322   >>