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