could overwind
Regular verb: overwind - overwinded- overwinded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could overwind
you could overwind
she could overwind
we could overwind
you could overwind
they could overwind 	I could be overwinding
you could be overwinding
she could be overwinding
we could be overwinding
you could be overwinding
they could be overwinding	I could have overwinded
you could have overwinded
she could have overwinded
we could have overwinded
you could have overwinded
they could have overwinded	I could have been overwinding
you could have been overwinding
she could have been overwinding
we could have been overwinding
you could have been overwinding
they could have been overwinding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't overwind
you couldn't overwind
she couldn't overwind
we couldn't overwind
you couldn't overwind
they couldn't overwind 	I couldn't be overwinding
you couldn't be overwinding
she couldn't be overwinding
we couldn't be overwinding
you couldn't be overwinding
they couldn't be overwinding	I couldn't have overwinded
you couldn't have overwinded
she couldn't have overwinded
we couldn't have overwinded
you couldn't have overwinded
they couldn't have overwinded	I couldn't have been overwinding
you couldn't have been overwinding
she couldn't have been overwinding
we couldn't have been overwinding
you couldn't have been overwinding
they couldn't have been overwinding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I overwind?
could you overwind?
could she overwind?
could we overwind?
could you overwind?
could they overwind? 	could I be overwinding?
could you be overwinding?
could she be overwinding?
could we be overwinding?
could you be overwinding?
could they be overwinding? 	could I have overwinded?
could you have overwinded?
could she have overwinded?
could we have overwinded?
could you have overwinded?
could they have overwinded? 	could I have been overwinding?
could you have been overwinding?
could she have been overwinding?
could we have been overwinding?
could you have been overwinding?
could they have been overwinding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I overwind?
couldn't you overwind?
couldn't she overwind?
couldn't we overwind?
couldn't you overwind?
couldn't they overwind? 	couldn't I be overwinding?
couldn't you be overwinding?
couldn't she be overwinding?
couldn't we be overwinding?
couldn't you be overwinding?
couldn't they be overwinding? 	couldn't I have overwinded?
couldn't you have overwinded?
couldn't she have overwinded?
couldn't we have overwinded?
couldn't you have overwinded?
couldn't they have overwinded? 	couldn't I have been overwinding?
couldn't you have been overwinding?
couldn't she have been overwinding?
couldn't we have been overwinding?
couldn't you have been overwinding?
couldn't they have been overwinding?