I've been substantiating you've been substantiating he's been substantiating we've been substantiating you've been substantiating they've been substantiating
I'd been substantiating you'd been substantiating he'd been substantiating we'd been substantiating you'd been substantiating they'd been substantiating
I'll be substantiating you'll be substantiating he'll be substantiating we'll be substantiating you'll be substantiating they'll be substantiating
Futuro perfecto
I'll have substantiated you'll have substantiated he'll have substantiated we'll have substantiated you'll have substantiated they'll have substantiated
Futuro perfecto contínuo
I'll have been substantiating you'll have been substantiating he'll have been substantiating we'll have been substantiating you'll have been substantiating they'll have been substantiating
I'd be substantiating you'd be substantiating he'd be substantiating we'd be substantiating you'd be substantiating they'd be substantiating
Passado
I'd have substantiated you'd have substantiated he'd have substantiated we'd have substantiated you'd have substantiated they'd have substantiated
Passado continuo
I'd have been substantiating you'd have been substantiating he'd have been substantiating we'd have been substantiating you'd have been substantiating they'd have been substantiating