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 couldn't gust
you couldn't gust
he couldn't gust
we couldn't gust
you couldn't gust
they couldn't gust 	I couldn't be gusting
you couldn't be gusting
he couldn't be gusting
we couldn't be gusting
you couldn't be gusting
they couldn't be gusting	I couldn't have gusted
you couldn't have gusted
he couldn't have gusted
we couldn't have gusted
you couldn't have gusted
they couldn't have gusted	I couldn't have been gusting
you couldn't have been gusting
he couldn't have been gusting
we couldn't have been gusting
you couldn't have been gusting
they couldn't 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 	
couldn't I gust?
couldn't you gust?
couldn't he gust?
couldn't we gust?
couldn't you gust?
couldn't they gust? 	couldn't I be gusting?
couldn't you be gusting?
couldn't he be gusting?
couldn't we be gusting?
couldn't you be gusting?
couldn't they be gusting? 	couldn't I have gusted?
couldn't you have gusted?
couldn't he have gusted?
couldn't we have gusted?
couldn't you have gusted?
couldn't they have gusted? 	couldn't I have been gusting?
couldn't you have been gusting?
couldn't he have been gusting?
couldn't we have been gusting?
couldn't you have been gusting?
couldn't they have been gusting?