I can bulwark you can bulwark he can bulwark we can bulwark you can bulwark they can bulwark
V-ing form
I can be bulwarking you can be bulwarking he can be bulwarking we can be bulwarking you can be bulwarking they can be bulwarking
Perfect
I can have bulwarked you can have bulwarked he can have bulwarked we can have bulwarked you can have bulwarked they can have bulwarked
V-ing perfect
I can have been bulwarking you can have been bulwarking he can have been bulwarking we can have been bulwarking you can have been bulwarking they can have been bulwarking
Negation
Simple form
I can't bulwark you can't bulwark he can't bulwark we can't bulwark you can't bulwark they can't bulwark
V-ing form
I can't be bulwarking you can't be bulwarking he can't be bulwarking we can't be bulwarking you can't be bulwarking they can't be bulwarking
Perfect
I can't have bulwarked you can't have bulwarked he can't have bulwarked we can't have bulwarked you can't have bulwarked they can't have bulwarked
V-ing perfect
I can't have been bulwarking you can't have been bulwarking he can't have been bulwarking we can't have been bulwarking you can't have been bulwarking they can't have been bulwarking
Interrogative form
Simple form
can I bulwark? can you bulwark? can he bulwark? can we bulwark? can you bulwark? can they bulwark?
V-ing form
can I be bulwarking? can you be bulwarking? can he be bulwarking? can we be bulwarking? can you be bulwarking? can they be bulwarking?
Perfect
can I have bulwarked? can you have bulwarked? can he have bulwarked? can we have bulwarked? can you have bulwarked? can they have bulwarked?
V-ing perfect
can I have been bulwarking? can you have been bulwarking? can he have been bulwarking? can we have been bulwarking? can you have been bulwarking? can they have been bulwarking?
Interro-negative form
Simple form
can't I bulwark? can't you bulwark? can't he bulwark? can't we bulwark? can't you bulwark? can't they bulwark?
V-ing form
can't I be bulwarking? can't you be bulwarking? can't he be bulwarking? can't we be bulwarking? can't you be bulwarking? can't they be bulwarking?
Perfect
can't I have bulwarked? can't you have bulwarked? can't he have bulwarked? can't we have bulwarked? can't you have bulwarked? can't they have bulwarked?
V-ing perfect
can't I have been bulwarking? can't you have been bulwarking? can't he have been bulwarking? can't we have been bulwarking? can't you have been bulwarking? can't they have been bulwarking?