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Forma con V-ing
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Perfecto
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Perfecto con V-ing
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Negación
Forma simple
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Forma con V-ing
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Perfecto
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Perfecto con V-ing
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Forma interrogativa
Forma simple
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Forma con V-ing
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Perfecto
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Perfecto con V-ing
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Forma interro-negativa
Forma simple
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Forma con V-ing
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Perfecto
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Perfecto con V-ing
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