I can blank you can blank he can blank we can blank you can blank they can blank
V-ing form
I can be blanking you can be blanking he can be blanking we can be blanking you can be blanking they can be blanking
Perfect
I can have blanked you can have blanked he can have blanked we can have blanked you can have blanked they can have blanked
V-ing perfect
I can have been blanking you can have been blanking he can have been blanking we can have been blanking you can have been blanking they can have been blanking
Negation
Simple form
I can't blank you can't blank he can't blank we can't blank you can't blank they can't blank
V-ing form
I can't be blanking you can't be blanking he can't be blanking we can't be blanking you can't be blanking they can't be blanking
Perfect
I can't have blanked you can't have blanked he can't have blanked we can't have blanked you can't have blanked they can't have blanked
V-ing perfect
I can't have been blanking you can't have been blanking he can't have been blanking we can't have been blanking you can't have been blanking they can't have been blanking
Interrogative form
Simple form
can I blank? can you blank? can he blank? can we blank? can you blank? can they blank?
V-ing form
can I be blanking? can you be blanking? can he be blanking? can we be blanking? can you be blanking? can they be blanking?
Perfect
can I have blanked? can you have blanked? can he have blanked? can we have blanked? can you have blanked? can they have blanked?
V-ing perfect
can I have been blanking? can you have been blanking? can he have been blanking? can we have been blanking? can you have been blanking? can they have been blanking?
Interro-negative form
Simple form
can't I blank? can't you blank? can't he blank? can't we blank? can't you blank? can't they blank?
V-ing form
can't I be blanking? can't you be blanking? can't he be blanking? can't we be blanking? can't you be blanking? can't they be blanking?
Perfect
can't I have blanked? can't you have blanked? can't he have blanked? can't we have blanked? can't you have blanked? can't they have blanked?
V-ing perfect
can't I have been blanking? can't you have been blanking? can't he have been blanking? can't we have been blanking? can't you have been blanking? can't they have been blanking?