I'll be littering you'll be littering he'll be littering we'll be littering you'll be littering they'll be littering
Futuro anteriore
I'll have littered you'll have littered he'll have littered we'll have littered you'll have littered they'll have littered
Futuro anteriore contínuo
I'll have been littering you'll have been littering he'll have been littering we'll have been littering you'll have been littering they'll have been littering
I'd be littering you'd be littering he'd be littering we'd be littering you'd be littering they'd be littering
Passato
I'd have littered you'd have littered he'd have littered we'd have littered you'd have littered they'd have littered
Passato continuo
I'd have been littering you'd have been littering he'd have been littering we'd have been littering you'd have been littering they'd have been littering