could swerve
Regular verb: swerve - swerved- swerved

Affirmation 	
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I could swerve
you could swerve
he could swerve
we could swerve
you could swerve
they could swerve 	I could be swerving
you could be swerving
he could be swerving
we could be swerving
you could be swerving
they could be swerving	I could have swerved
you could have swerved
he could have swerved
we could have swerved
you could have swerved
they could have swerved	I could have been swerving
you could have been swerving
he could have been swerving
we could have been swerving
you could have been swerving
they could have been swerving	

Negation 	
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I couldn't swerve
you couldn't swerve
he couldn't swerve
we couldn't swerve
you couldn't swerve
they couldn't swerve 	I couldn't be swerving
you couldn't be swerving
he couldn't be swerving
we couldn't be swerving
you couldn't be swerving
they couldn't be swerving	I couldn't have swerved
you couldn't have swerved
he couldn't have swerved
we couldn't have swerved
you couldn't have swerved
they couldn't have swerved	I couldn't have been swerving
you couldn't have been swerving
he couldn't have been swerving
we couldn't have been swerving
you couldn't have been swerving
they couldn't have been swerving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I swerve?
could you swerve?
could he swerve?
could we swerve?
could you swerve?
could they swerve? 	could I be swerving?
could you be swerving?
could he be swerving?
could we be swerving?
could you be swerving?
could they be swerving? 	could I have swerved?
could you have swerved?
could he have swerved?
could we have swerved?
could you have swerved?
could they have swerved? 	could I have been swerving?
could you have been swerving?
could he have been swerving?
could we have been swerving?
could you have been swerving?
could they have been swerving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I swerve?
couldn't you swerve?
couldn't he swerve?
couldn't we swerve?
couldn't you swerve?
couldn't they swerve? 	couldn't I be swerving?
couldn't you be swerving?
couldn't he be swerving?
couldn't we be swerving?
couldn't you be swerving?
couldn't they be swerving? 	couldn't I have swerved?
couldn't you have swerved?
couldn't he have swerved?
couldn't we have swerved?
couldn't you have swerved?
couldn't they have swerved? 	couldn't I have been swerving?
couldn't you have been swerving?
couldn't he have been swerving?
couldn't we have been swerving?
couldn't you have been swerving?
couldn't they have been swerving?