could adulterate
Verbo regular: adulterate - adulterated- adulterated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I could adulterate
you could adulterate
he could adulterate
we could adulterate
you could adulterate
they could adulterate 	I could be adulterating
you could be adulterating
he could be adulterating
we could be adulterating
you could be adulterating
they could be adulterating	I could have adulterated
you could have adulterated
he could have adulterated
we could have adulterated
you could have adulterated
they could have adulterated	I could have been adulterating
you could have been adulterating
he could have been adulterating
we could have been adulterating
you could have been adulterating
they could have been adulterating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I couldn't adulterate
you couldn't adulterate
he couldn't adulterate
we couldn't adulterate
you couldn't adulterate
they couldn't adulterate 	I couldn't be adulterating
you couldn't be adulterating
he couldn't be adulterating
we couldn't be adulterating
you couldn't be adulterating
they couldn't be adulterating	I couldn't have adulterated
you couldn't have adulterated
he couldn't have adulterated
we couldn't have adulterated
you couldn't have adulterated
they couldn't have adulterated	I couldn't have been adulterating
you couldn't have been adulterating
he couldn't have been adulterating
we couldn't have been adulterating
you couldn't have been adulterating
they couldn't have been adulterating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
could I adulterate?
could you adulterate?
could he adulterate?
could we adulterate?
could you adulterate?
could they adulterate? 	could I be adulterating?
could you be adulterating?
could he be adulterating?
could we be adulterating?
could you be adulterating?
could they be adulterating? 	could I have adulterated?
could you have adulterated?
could he have adulterated?
could we have adulterated?
could you have adulterated?
could they have adulterated? 	could I have been adulterating?
could you have been adulterating?
could he have been adulterating?
could we have been adulterating?
could you have been adulterating?
could they have been adulterating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
couldn't I adulterate?
couldn't you adulterate?
couldn't he adulterate?
couldn't we adulterate?
couldn't you adulterate?
couldn't they adulterate? 	couldn't I be adulterating?
couldn't you be adulterating?
couldn't he be adulterating?
couldn't we be adulterating?
couldn't you be adulterating?
couldn't they be adulterating? 	couldn't I have adulterated?
couldn't you have adulterated?
couldn't he have adulterated?
couldn't we have adulterated?
couldn't you have adulterated?
couldn't they have adulterated? 	couldn't I have been adulterating?
couldn't you have been adulterating?
couldn't he have been adulterating?
couldn't we have been adulterating?
couldn't you have been adulterating?
couldn't they have been adulterating?