I've been dofferentiating you've been dofferentiating she's been dofferentiating we've been dofferentiating you've been dofferentiating they've been dofferentiating
I'd been dofferentiating you'd been dofferentiating she'd been dofferentiating we'd been dofferentiating you'd been dofferentiating they'd been dofferentiating
I'll be dofferentiating you'll be dofferentiating she'll be dofferentiating we'll be dofferentiating you'll be dofferentiating they'll be dofferentiating
Future perfect
I'll have dofferentiated you'll have dofferentiated she'll have dofferentiated we'll have dofferentiated you'll have dofferentiated they'll have dofferentiated
Future perfect continuous
I'll have been dofferentiating you'll have been dofferentiating she'll have been dofferentiating we'll have been dofferentiating you'll have been dofferentiating they'll have been dofferentiating
I'd be dofferentiating you'd be dofferentiating she'd be dofferentiating we'd be dofferentiating you'd be dofferentiating they'd be dofferentiating
Past
I'd have dofferentiated you'd have dofferentiated she'd have dofferentiated we'd have dofferentiated you'd have dofferentiated they'd have dofferentiated
Past continuous
I'd have been dofferentiating you'd have been dofferentiating she'd have been dofferentiating we'd have been dofferentiating you'd have been dofferentiating they'd have been dofferentiating