could gust
Regular verb: gust - gusted- gusted

Affirmation 	
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I could gust
you could gust
he could gust
we could gust
you could gust
they could gust 	I could be gusting
you could be gusting
he could be gusting
we could be gusting
you could be gusting
they could be gusting	I could have gusted
you could have gusted
he could have gusted
we could have gusted
you could have gusted
they could have gusted	I could have been gusting
you could have been gusting
he could have been gusting
we could have been gusting
you could have been gusting
they could have been gusting	

Negation 	
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I could not gust
you could not gust
he could not gust
we could not gust
you could not gust
they could not gust 	I could not be gusting
you could not be gusting
he could not be gusting
we could not be gusting
you could not be gusting
they could not be gusting	I could not have gusted
you could not have gusted
he could not have gusted
we could not have gusted
you could not have gusted
they could not have gusted	I could not have been gusting
you could not have been gusting
he could not have been gusting
we could not have been gusting
you could not have been gusting
they could not have been gusting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I gust?
could you gust?
could he gust?
could we gust?
could you gust?
could they gust? 	could I be gusting?
could you be gusting?
could he be gusting?
could we be gusting?
could you be gusting?
could they be gusting? 	could I have gusted?
could you have gusted?
could he have gusted?
could we have gusted?
could you have gusted?
could they have gusted? 	could I have been gusting?
could you have been gusting?
could he have been gusting?
could we have been gusting?
could you have been gusting?
could they have been gusting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not gust?
could you not gust?
could he not gust?
could we not gust?
could you not gust?
could they not gust? 	could I not be gusting?
could you not be gusting?
could he not be gusting?
could we not be gusting?
could you not be gusting?
could they not be gusting? 	could I not have gusted?
could you not have gusted?
could he not have gusted?
could we not have gusted?
could you not have gusted?
could they not have gusted? 	could I not have been gusting?
could you not have been gusting?
could he not have been gusting?
could we not have been gusting?
could you not have been gusting?
could they not have been gusting?