could parameterize
Regular verb: parameterize - parameterized- parameterized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could parameterize
you could parameterize
he could parameterize
we could parameterize
you could parameterize
they could parameterize 	I could be parameterizing
you could be parameterizing
he could be parameterizing
we could be parameterizing
you could be parameterizing
they could be parameterizing	I could have parameterized
you could have parameterized
he 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
he 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 couldn't parameterize
you couldn't parameterize
he couldn't parameterize
we couldn't parameterize
you couldn't parameterize
they couldn't parameterize 	I couldn't be parameterizing
you couldn't be parameterizing
he couldn't be parameterizing
we couldn't be parameterizing
you couldn't be parameterizing
they couldn't be parameterizing	I couldn't have parameterized
you couldn't have parameterized
he couldn't have parameterized
we couldn't have parameterized
you couldn't have parameterized
they couldn't have parameterized	I couldn't have been parameterizing
you couldn't have been parameterizing
he couldn't have been parameterizing
we couldn't have been parameterizing
you couldn't have been parameterizing
they couldn't have been parameterizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I parameterize?
could you parameterize?
could he parameterize?
could we parameterize?
could you parameterize?
could they parameterize? 	could I be parameterizing?
could you be parameterizing?
could he be parameterizing?
could we be parameterizing?
could you be parameterizing?
could they be parameterizing? 	could I have parameterized?
could you have parameterized?
could he 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 he 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 	
couldn't I parameterize?
couldn't you parameterize?
couldn't he parameterize?
couldn't we parameterize?
couldn't you parameterize?
couldn't they parameterize? 	couldn't I be parameterizing?
couldn't you be parameterizing?
couldn't he be parameterizing?
couldn't we be parameterizing?
couldn't you be parameterizing?
couldn't they be parameterizing? 	couldn't I have parameterized?
couldn't you have parameterized?
couldn't he have parameterized?
couldn't we have parameterized?
couldn't you have parameterized?
couldn't they have parameterized? 	couldn't I have been parameterizing?
couldn't you have been parameterizing?
couldn't he have been parameterizing?
couldn't we have been parameterizing?
couldn't you have been parameterizing?
couldn't they have been parameterizing?