I'll be lengthening you'll be lengthening he'll be lengthening we'll be lengthening you'll be lengthening they'll be lengthening
Futur antérieur
I'll have lengthened you'll have lengthened he'll have lengthened we'll have lengthened you'll have lengthened they'll have lengthened
Futur antérieur continu
I'll have been lengthening you'll have been lengthening he'll have been lengthening we'll have been lengthening you'll have been lengthening they'll have been lengthening
I'd be lengthening you'd be lengthening he'd be lengthening we'd be lengthening you'd be lengthening they'd be lengthening
Passé
I'd have lengthened you'd have lengthened he'd have lengthened we'd have lengthened you'd have lengthened they'd have lengthened
Passé continu
I'd have been lengthening you'd have been lengthening he'd have been lengthening we'd have been lengthening you'd have been lengthening they'd have been lengthening