I'll be unbuttoning you'll be unbuttoning he'll be unbuttoning we'll be unbuttoning you'll be unbuttoning they'll be unbuttoning
futuro perfeito
I'll have unbuttoned you'll have unbuttoned he'll have unbuttoned we'll have unbuttoned you'll have unbuttoned they'll have unbuttoned
futuro perfeito contínuo
I'll have been unbuttoning you'll have been unbuttoning he'll have been unbuttoning we'll have been unbuttoning you'll have been unbuttoning they'll have been unbuttoning
I'd be unbuttoning you'd be unbuttoning he'd be unbuttoning we'd be unbuttoning you'd be unbuttoning they'd be unbuttoning
Passado
I'd have unbuttoned you'd have unbuttoned he'd have unbuttoned we'd have unbuttoned you'd have unbuttoned they'd have unbuttoned
Passado contínuo
I'd have been unbuttoning you'd have been unbuttoning he'd have been unbuttoning we'd have been unbuttoning you'd have been unbuttoning they'd have been unbuttoning