I've been preassembling you've been preassembling he's been preassembling we've been preassembling you've been preassembling they've been preassembling
I'll be preassembling you'll be preassembling he'll be preassembling we'll be preassembling you'll be preassembling they'll be preassembling
Futuro anteriore
I'll have preassembled you'll have preassembled he'll have preassembled we'll have preassembled you'll have preassembled they'll have preassembled
Futuro anteriore contínuo
I'll have been preassembling you'll have been preassembling he'll have been preassembling we'll have been preassembling you'll have been preassembling they'll have been preassembling
I'd be preassembling you'd be preassembling he'd be preassembling we'd be preassembling you'd be preassembling they'd be preassembling
Passato
I'd have preassembled you'd have preassembled he'd have preassembled we'd have preassembled you'd have preassembled they'd have preassembled
Passato continuo
I'd have been preassembling you'd have been preassembling he'd have been preassembling we'd have been preassembling you'd have been preassembling they'd have been preassembling