I'll be buttering you'll be buttering she'll be buttering we'll be buttering you'll be buttering they'll be buttering
Futur antérieur
I'll have buttered you'll have buttered she'll have buttered we'll have buttered you'll have buttered they'll have buttered
Futur antérieur continu
I'll have been buttering you'll have been buttering she'll have been buttering we'll have been buttering you'll have been buttering they'll have been buttering
I'd be buttering you'd be buttering she'd be buttering we'd be buttering you'd be buttering they'd be buttering
Passé
I'd have buttered you'd have buttered she'd have buttered we'd have buttered you'd have buttered they'd have buttered
Passé continu
I'd have been buttering you'd have been buttering she'd have been buttering we'd have been buttering you'd have been buttering they'd have been buttering