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