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