D231123313223313132313233313131323331313233313233313311233132313232212321   >>    D23112331322331313231323331313132333131323331323331331123313231323221232   <<    D231123313223313132313233313131323331313233313233313311233132313232212323   >>      D231123313223313132313233313131323331313233313233313311233132313232212322   >>