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 perfecto
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 perfecto 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
Passado
I'd have littered you'd have littered he'd have littered we'd have littered you'd have littered they'd have littered
Passado 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