I'll be prolonging you'll be prolonging he'll be prolonging we'll be prolonging you'll be prolonging they'll be prolonging
Futur antérieur
I'll have prolonged you'll have prolonged he'll have prolonged we'll have prolonged you'll have prolonged they'll have prolonged
Futur antérieur continu
I'll have been prolonging you'll have been prolonging he'll have been prolonging we'll have been prolonging you'll have been prolonging they'll have been prolonging
I'd be prolonging you'd be prolonging he'd be prolonging we'd be prolonging you'd be prolonging they'd be prolonging
Passé
I'd have prolonged you'd have prolonged he'd have prolonged we'd have prolonged you'd have prolonged they'd have prolonged
Passé continu
I'd have been prolonging you'd have been prolonging he'd have been prolonging we'd have been prolonging you'd have been prolonging they'd have been prolonging