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