I'll be crumbling you'll be crumbling he'll be crumbling we'll be crumbling you'll be crumbling they'll be crumbling
Futuro perfecto
I'll have crumbled you'll have crumbled he'll have crumbled we'll have crumbled you'll have crumbled they'll have crumbled
Futuro perfecto contínuo
I'll have been crumbling you'll have been crumbling he'll have been crumbling we'll have been crumbling you'll have been crumbling they'll have been crumbling
I'd be crumbling you'd be crumbling he'd be crumbling we'd be crumbling you'd be crumbling they'd be crumbling
Passado
I'd have crumbled you'd have crumbled he'd have crumbled we'd have crumbled you'd have crumbled they'd have crumbled
Passado continuo
I'd have been crumbling you'd have been crumbling he'd have been crumbling we'd have been crumbling you'd have been crumbling they'd have been crumbling