could bulldoze
Regular verb: bulldoze - bulldozed- bulldozed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I could bulldoze
you could bulldoze
he could bulldoze
we could bulldoze
you could bulldoze
they could bulldoze 	I could be bulldozing
you could be bulldozing
he could be bulldozing
we could be bulldozing
you could be bulldozing
they could be bulldozing	I could have bulldozed
you could have bulldozed
he could have bulldozed
we could have bulldozed
you could have bulldozed
they could have bulldozed	I could have been bulldozing
you could have been bulldozing
he could have been bulldozing
we could have been bulldozing
you could have been bulldozing
they could have been bulldozing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I couldn't bulldoze
you couldn't bulldoze
he couldn't bulldoze
we couldn't bulldoze
you couldn't bulldoze
they couldn't bulldoze 	I couldn't be bulldozing
you couldn't be bulldozing
he couldn't be bulldozing
we couldn't be bulldozing
you couldn't be bulldozing
they couldn't be bulldozing	I couldn't have bulldozed
you couldn't have bulldozed
he couldn't have bulldozed
we couldn't have bulldozed
you couldn't have bulldozed
they couldn't have bulldozed	I couldn't have been bulldozing
you couldn't have been bulldozing
he couldn't have been bulldozing
we couldn't have been bulldozing
you couldn't have been bulldozing
they couldn't have been bulldozing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
could I bulldoze?
could you bulldoze?
could he bulldoze?
could we bulldoze?
could you bulldoze?
could they bulldoze? 	could I be bulldozing?
could you be bulldozing?
could he be bulldozing?
could we be bulldozing?
could you be bulldozing?
could they be bulldozing? 	could I have bulldozed?
could you have bulldozed?
could he have bulldozed?
could we have bulldozed?
could you have bulldozed?
could they have bulldozed? 	could I have been bulldozing?
could you have been bulldozing?
could he have been bulldozing?
could we have been bulldozing?
could you have been bulldozing?
could they have been bulldozing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
couldn't I bulldoze?
couldn't you bulldoze?
couldn't he bulldoze?
couldn't we bulldoze?
couldn't you bulldoze?
couldn't they bulldoze? 	couldn't I be bulldozing?
couldn't you be bulldozing?
couldn't he be bulldozing?
couldn't we be bulldozing?
couldn't you be bulldozing?
couldn't they be bulldozing? 	couldn't I have bulldozed?
couldn't you have bulldozed?
couldn't he have bulldozed?
couldn't we have bulldozed?
couldn't you have bulldozed?
couldn't they have bulldozed? 	couldn't I have been bulldozing?
couldn't you have been bulldozing?
couldn't he have been bulldozing?
couldn't we have been bulldozing?
couldn't you have been bulldozing?
couldn't they have been bulldozing?