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