could skew
Regular verb: skew - skewed- skewed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could skew
you could skew
she could skew
we could skew
you could skew
they could skew 	I could be skewing
you could be skewing
she could be skewing
we could be skewing
you could be skewing
they could be skewing	I could have skewed
you could have skewed
she could have skewed
we could have skewed
you could have skewed
they could have skewed	I could have been skewing
you could have been skewing
she could have been skewing
we could have been skewing
you could have been skewing
they could have been skewing	

Negation 	
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I could not skew
you could not skew
she could not skew
we could not skew
you could not skew
they could not skew 	I could not be skewing
you could not be skewing
she could not be skewing
we could not be skewing
you could not be skewing
they could not be skewing	I could not have skewed
you could not have skewed
she could not have skewed
we could not have skewed
you could not have skewed
they could not have skewed	I could not have been skewing
you could not have been skewing
she could not have been skewing
we could not have been skewing
you could not have been skewing
they could not have been skewing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I skew?
could you skew?
could she skew?
could we skew?
could you skew?
could they skew? 	could I be skewing?
could you be skewing?
could she be skewing?
could we be skewing?
could you be skewing?
could they be skewing? 	could I have skewed?
could you have skewed?
could she have skewed?
could we have skewed?
could you have skewed?
could they have skewed? 	could I have been skewing?
could you have been skewing?
could she have been skewing?
could we have been skewing?
could you have been skewing?
could they have been skewing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not skew?
could you not skew?
could she not skew?
could we not skew?
could you not skew?
could they not skew? 	could I not be skewing?
could you not be skewing?
could she not be skewing?
could we not be skewing?
could you not be skewing?
could they not be skewing? 	could I not have skewed?
could you not have skewed?
could she not have skewed?
could we not have skewed?
could you not have skewed?
could they not have skewed? 	could I not have been skewing?
could you not have been skewing?
could she not have been skewing?
could we not have been skewing?
could you not have been skewing?
could they not have been skewing?