could parameterize
Regular verb: parameterize - parameterized- parameterized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could parameterize
you could parameterize
she could parameterize
we could parameterize
you could parameterize
they could parameterize 	I could be parameterizing
you could be parameterizing
she could be parameterizing
we could be parameterizing
you could be parameterizing
they could be parameterizing	I could have parameterized
you could have parameterized
she could have parameterized
we could have parameterized
you could have parameterized
they could have parameterized	I could have been parameterizing
you could have been parameterizing
she could have been parameterizing
we could have been parameterizing
you could have been parameterizing
they could have been parameterizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could not parameterize
you could not parameterize
she could not parameterize
we could not parameterize
you could not parameterize
they could not parameterize 	I could not be parameterizing
you could not be parameterizing
she could not be parameterizing
we could not be parameterizing
you could not be parameterizing
they could not be parameterizing	I could not have parameterized
you could not have parameterized
she could not have parameterized
we could not have parameterized
you could not have parameterized
they could not have parameterized	I could not have been parameterizing
you could not have been parameterizing
she could not have been parameterizing
we could not have been parameterizing
you could not have been parameterizing
they could not have been parameterizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I parameterize?
could you parameterize?
could she parameterize?
could we parameterize?
could you parameterize?
could they parameterize? 	could I be parameterizing?
could you be parameterizing?
could she be parameterizing?
could we be parameterizing?
could you be parameterizing?
could they be parameterizing? 	could I have parameterized?
could you have parameterized?
could she have parameterized?
could we have parameterized?
could you have parameterized?
could they have parameterized? 	could I have been parameterizing?
could you have been parameterizing?
could she have been parameterizing?
could we have been parameterizing?
could you have been parameterizing?
could they have been parameterizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I not parameterize?
could you not parameterize?
could she not parameterize?
could we not parameterize?
could you not parameterize?
could they not parameterize? 	could I not be parameterizing?
could you not be parameterizing?
could she not be parameterizing?
could we not be parameterizing?
could you not be parameterizing?
could they not be parameterizing? 	could I not have parameterized?
could you not have parameterized?
could she not have parameterized?
could we not have parameterized?
could you not have parameterized?
could they not have parameterized? 	could I not have been parameterizing?
could you not have been parameterizing?
could she not have been parameterizing?
could we not have been parameterizing?
could you not have been parameterizing?
could they not have been parameterizing?