I can bork you can bork he can bork we can bork you can bork they can bork
V-ing form
I can be borking you can be borking he can be borking we can be borking you can be borking they can be borking
Perfect
I can have borked you can have borked he can have borked we can have borked you can have borked they can have borked
V-ing perfect
I can have been borking you can have been borking he can have been borking we can have been borking you can have been borking they can have been borking
Negation
Simple form
I can't bork you can't bork he can't bork we can't bork you can't bork they can't bork
V-ing form
I can't be borking you can't be borking he can't be borking we can't be borking you can't be borking they can't be borking
Perfect
I can't have borked you can't have borked he can't have borked we can't have borked you can't have borked they can't have borked
V-ing perfect
I can't have been borking you can't have been borking he can't have been borking we can't have been borking you can't have been borking they can't have been borking
Interrogative form
Simple form
can I bork? can you bork? can he bork? can we bork? can you bork? can they bork?
V-ing form
can I be borking? can you be borking? can he be borking? can we be borking? can you be borking? can they be borking?
Perfect
can I have borked? can you have borked? can he have borked? can we have borked? can you have borked? can they have borked?
V-ing perfect
can I have been borking? can you have been borking? can he have been borking? can we have been borking? can you have been borking? can they have been borking?
Interro-negative form
Simple form
can't I bork? can't you bork? can't he bork? can't we bork? can't you bork? can't they bork?
V-ing form
can't I be borking? can't you be borking? can't he be borking? can't we be borking? can't you be borking? can't they be borking?
Perfect
can't I have borked? can't you have borked? can't he have borked? can't we have borked? can't you have borked? can't they have borked?
V-ing perfect
can't I have been borking? can't you have been borking? can't he have been borking? can't we have been borking? can't you have been borking? can't they have been borking?