Form:
has / have + been + being + past participle
⚠️ This tense is rare but grammatically correct and used when emphasizing the ongoing duration of a passive action.
Examples:
- Goods have been being transported by rail for decades.
- The railway has been being used mainly for domestic travel.
- Containers have been being carried across the country all year.
- The system has been being modernized since 2020.