I'll be stiffening you'll be stiffening he'll be stiffening we'll be stiffening you'll be stiffening they'll be stiffening
futuro perfeito
I'll have stiffened you'll have stiffened he'll have stiffened we'll have stiffened you'll have stiffened they'll have stiffened
futuro perfeito contínuo
I'll have been stiffening you'll have been stiffening he'll have been stiffening we'll have been stiffening you'll have been stiffening they'll have been stiffening
I'd be stiffening you'd be stiffening he'd be stiffening we'd be stiffening you'd be stiffening they'd be stiffening
Passado
I'd have stiffened you'd have stiffened he'd have stiffened we'd have stiffened you'd have stiffened they'd have stiffened
Passado contínuo
I'd have been stiffening you'd have been stiffening he'd have been stiffening we'd have been stiffening you'd have been stiffening they'd have been stiffening