I'll be summating you'll be summating she'll be summating we'll be summating you'll be summating they'll be summating
Futuro anteriore
I'll have summated you'll have summated she'll have summated we'll have summated you'll have summated they'll have summated
Futuro anteriore contínuo
I'll have been summating you'll have been summating she'll have been summating we'll have been summating you'll have been summating they'll have been summating
I'd be summating you'd be summating she'd be summating we'd be summating you'd be summating they'd be summating
Passato
I'd have summated you'd have summated she'd have summated we'd have summated you'd have summated they'd have summated
Passato continuo
I'd have been summating you'd have been summating she'd have been summating we'd have been summating you'd have been summating they'd have been summating