D231123313223313132313233313131323223313232113313231311211311211   >>    D23112331322331313231323331313132322331323211331323131121131121   <<    D231123313223313132313233313131323223313232113313231311211311213   >>      D231123313223313132313233313131323223313232113313231311211311212   >>