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Futur antérieur
I'll have attend sthed you'll have attend sthed she'll have attend sthed we'll have attend sthed you'll have attend sthed they'll have attend sthed
Futur antérieur continu
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Passé
I'd have attend sthed you'd have attend sthed she'd have attend sthed we'd have attend sthed you'd have attend sthed they'd have attend sthed
Passé continu
I'd have been attend sthing you'd have been attend sthing she'd have been attend sthing we'd have been attend sthing you'd have been attend sthing they'd have been attend sthing