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