could visualize
Regular verb: visualize - visualized- visualized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could visualize
you could visualize
she could visualize
we could visualize
you could visualize
they could visualize 	I could be visualizing
you could be visualizing
she could be visualizing
we could be visualizing
you could be visualizing
they could be visualizing	I could have visualized
you could have visualized
she could have visualized
we could have visualized
you could have visualized
they could have visualized	I could have been visualizing
you could have been visualizing
she could have been visualizing
we could have been visualizing
you could have been visualizing
they could have been visualizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't visualize
you couldn't visualize
she couldn't visualize
we couldn't visualize
you couldn't visualize
they couldn't visualize 	I couldn't be visualizing
you couldn't be visualizing
she couldn't be visualizing
we couldn't be visualizing
you couldn't be visualizing
they couldn't be visualizing	I couldn't have visualized
you couldn't have visualized
she couldn't have visualized
we couldn't have visualized
you couldn't have visualized
they couldn't have visualized	I couldn't have been visualizing
you couldn't have been visualizing
she couldn't have been visualizing
we couldn't have been visualizing
you couldn't have been visualizing
they couldn't have been visualizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I visualize?
could you visualize?
could she visualize?
could we visualize?
could you visualize?
could they visualize? 	could I be visualizing?
could you be visualizing?
could she be visualizing?
could we be visualizing?
could you be visualizing?
could they be visualizing? 	could I have visualized?
could you have visualized?
could she have visualized?
could we have visualized?
could you have visualized?
could they have visualized? 	could I have been visualizing?
could you have been visualizing?
could she have been visualizing?
could we have been visualizing?
could you have been visualizing?
could they have been visualizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I visualize?
couldn't you visualize?
couldn't she visualize?
couldn't we visualize?
couldn't you visualize?
couldn't they visualize? 	couldn't I be visualizing?
couldn't you be visualizing?
couldn't she be visualizing?
couldn't we be visualizing?
couldn't you be visualizing?
couldn't they be visualizing? 	couldn't I have visualized?
couldn't you have visualized?
couldn't she have visualized?
couldn't we have visualized?
couldn't you have visualized?
couldn't they have visualized? 	couldn't I have been visualizing?
couldn't you have been visualizing?
couldn't she have been visualizing?
couldn't we have been visualizing?
couldn't you have been visualizing?
couldn't they have been visualizing?