I can bulldoze you can bulldoze she can bulldoze we can bulldoze you can bulldoze they can bulldoze
V-ing form
I can be bulldozing you can be bulldozing she can be bulldozing we can be bulldozing you can be bulldozing they can be bulldozing
Perfect
I can have bulldozed you can have bulldozed she can have bulldozed we can have bulldozed you can have bulldozed they can have bulldozed
V-ing perfect
I can have been bulldozing you can have been bulldozing she can have been bulldozing we can have been bulldozing you can have been bulldozing they can have been bulldozing
Negation
Simple form
I can't bulldoze you can't bulldoze she can't bulldoze we can't bulldoze you can't bulldoze they can't bulldoze
V-ing form
I can't be bulldozing you can't be bulldozing she can't be bulldozing we can't be bulldozing you can't be bulldozing they can't be bulldozing
Perfect
I can't have bulldozed you can't have bulldozed she can't have bulldozed we can't have bulldozed you can't have bulldozed they can't have bulldozed
V-ing perfect
I can't have been bulldozing you can't have been bulldozing she can't have been bulldozing we can't have been bulldozing you can't have been bulldozing they can't have been bulldozing
Interrogative form
Simple form
can I bulldoze? can you bulldoze? can she bulldoze? can we bulldoze? can you bulldoze? can they bulldoze?
V-ing form
can I be bulldozing? can you be bulldozing? can she be bulldozing? can we be bulldozing? can you be bulldozing? can they be bulldozing?
Perfect
can I have bulldozed? can you have bulldozed? can she have bulldozed? can we have bulldozed? can you have bulldozed? can they have bulldozed?
V-ing perfect
can I have been bulldozing? can you have been bulldozing? can she have been bulldozing? can we have been bulldozing? can you have been bulldozing? can they have been bulldozing?
Interro-negative form
Simple form
can't I bulldoze? can't you bulldoze? can't she bulldoze? can't we bulldoze? can't you bulldoze? can't they bulldoze?
V-ing form
can't I be bulldozing? can't you be bulldozing? can't she be bulldozing? can't we be bulldozing? can't you be bulldozing? can't they be bulldozing?
Perfect
can't I have bulldozed? can't you have bulldozed? can't she have bulldozed? can't we have bulldozed? can't you have bulldozed? can't they have bulldozed?
V-ing perfect
can't I have been bulldozing? can't you have been bulldozing? can't she have been bulldozing? can't we have been bulldozing? can't you have been bulldozing? can't they have been bulldozing?