could suburbanize
Regular verb: suburbanize - suburbanized- suburbanized

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could suburbanize
you could suburbanize
he could suburbanize
we could suburbanize
you could suburbanize
they could suburbanize 	I could be suburbanizing
you could be suburbanizing
he could be suburbanizing
we could be suburbanizing
you could be suburbanizing
they could be suburbanizing	I could have suburbanized
you could have suburbanized
he could have suburbanized
we could have suburbanized
you could have suburbanized
they could have suburbanized	I could have been suburbanizing
you could have been suburbanizing
he could have been suburbanizing
we could have been suburbanizing
you could have been suburbanizing
they could have been suburbanizing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't suburbanize
you couldn't suburbanize
he couldn't suburbanize
we couldn't suburbanize
you couldn't suburbanize
they couldn't suburbanize 	I couldn't be suburbanizing
you couldn't be suburbanizing
he couldn't be suburbanizing
we couldn't be suburbanizing
you couldn't be suburbanizing
they couldn't be suburbanizing	I couldn't have suburbanized
you couldn't have suburbanized
he couldn't have suburbanized
we couldn't have suburbanized
you couldn't have suburbanized
they couldn't have suburbanized	I couldn't have been suburbanizing
you couldn't have been suburbanizing
he couldn't have been suburbanizing
we couldn't have been suburbanizing
you couldn't have been suburbanizing
they couldn't have been suburbanizing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I suburbanize?
could you suburbanize?
could he suburbanize?
could we suburbanize?
could you suburbanize?
could they suburbanize? 	could I be suburbanizing?
could you be suburbanizing?
could he be suburbanizing?
could we be suburbanizing?
could you be suburbanizing?
could they be suburbanizing? 	could I have suburbanized?
could you have suburbanized?
could he have suburbanized?
could we have suburbanized?
could you have suburbanized?
could they have suburbanized? 	could I have been suburbanizing?
could you have been suburbanizing?
could he have been suburbanizing?
could we have been suburbanizing?
could you have been suburbanizing?
could they have been suburbanizing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I suburbanize?
couldn't you suburbanize?
couldn't he suburbanize?
couldn't we suburbanize?
couldn't you suburbanize?
couldn't they suburbanize? 	couldn't I be suburbanizing?
couldn't you be suburbanizing?
couldn't he be suburbanizing?
couldn't we be suburbanizing?
couldn't you be suburbanizing?
couldn't they be suburbanizing? 	couldn't I have suburbanized?
couldn't you have suburbanized?
couldn't he have suburbanized?
couldn't we have suburbanized?
couldn't you have suburbanized?
couldn't they have suburbanized? 	couldn't I have been suburbanizing?
couldn't you have been suburbanizing?
couldn't he have been suburbanizing?
couldn't we have been suburbanizing?
couldn't you have been suburbanizing?
couldn't they have been suburbanizing?