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