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