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