could contradict
Regular verb: contradict - contradicted- contradicted

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could contradict
you could contradict
she could contradict
we could contradict
you could contradict
they could contradict 	I could be contradicting
you could be contradicting
she could be contradicting
we could be contradicting
you could be contradicting
they could be contradicting	I could have contradicted
you could have contradicted
she could have contradicted
we could have contradicted
you could have contradicted
they could have contradicted	I could have been contradicting
you could have been contradicting
she could have been contradicting
we could have been contradicting
you could have been contradicting
they could have been contradicting	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't contradict
you couldn't contradict
she couldn't contradict
we couldn't contradict
you couldn't contradict
they couldn't contradict 	I couldn't be contradicting
you couldn't be contradicting
she couldn't be contradicting
we couldn't be contradicting
you couldn't be contradicting
they couldn't be contradicting	I couldn't have contradicted
you couldn't have contradicted
she couldn't have contradicted
we couldn't have contradicted
you couldn't have contradicted
they couldn't have contradicted	I couldn't have been contradicting
you couldn't have been contradicting
she couldn't have been contradicting
we couldn't have been contradicting
you couldn't have been contradicting
they couldn't have been contradicting	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I contradict?
could you contradict?
could she contradict?
could we contradict?
could you contradict?
could they contradict? 	could I be contradicting?
could you be contradicting?
could she be contradicting?
could we be contradicting?
could you be contradicting?
could they be contradicting? 	could I have contradicted?
could you have contradicted?
could she have contradicted?
could we have contradicted?
could you have contradicted?
could they have contradicted? 	could I have been contradicting?
could you have been contradicting?
could she have been contradicting?
could we have been contradicting?
could you have been contradicting?
could they have been contradicting? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I contradict?
couldn't you contradict?
couldn't she contradict?
couldn't we contradict?
couldn't you contradict?
couldn't they contradict? 	couldn't I be contradicting?
couldn't you be contradicting?
couldn't she be contradicting?
couldn't we be contradicting?
couldn't you be contradicting?
couldn't they be contradicting? 	couldn't I have contradicted?
couldn't you have contradicted?
couldn't she have contradicted?
couldn't we have contradicted?
couldn't you have contradicted?
couldn't they have contradicted? 	couldn't I have been contradicting?
couldn't you have been contradicting?
couldn't she have been contradicting?
couldn't we have been contradicting?
couldn't you have been contradicting?
couldn't they have been contradicting?