D231123313223313132313233313131323223313232113313231323111231231   >>    D23112331322331313231323331313132322331323211331323132311123123   <<    D231123313223313132313233313131323223313232113313231323111231233   >>      D231123313223313132313233313131323223313232113313231323111231232   >>