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