D231123313223313132313233313131323331313233313233313311221212131   >>    D23112331322331313231323331313132333131323331323331331122121213   <<    D231123313223313132313233313131323331313233313233313311221212133   >>      D231123313223313132313233313131323331313233313233313311221212132   >>