I can abbreviate you can abbreviate he can abbreviate we can abbreviate you can abbreviate they can abbreviate
V-ing form
I can be abbreviating you can be abbreviating he can be abbreviating we can be abbreviating you can be abbreviating they can be abbreviating
Perfect
I can have abbreviated you can have abbreviated he can have abbreviated we can have abbreviated you can have abbreviated they can have abbreviated
V-ing perfect
I can have been abbreviating you can have been abbreviating he can have been abbreviating we can have been abbreviating you can have been abbreviating they can have been abbreviating
Negation
Simple form
I can't abbreviate you can't abbreviate he can't abbreviate we can't abbreviate you can't abbreviate they can't abbreviate
V-ing form
I can't be abbreviating you can't be abbreviating he can't be abbreviating we can't be abbreviating you can't be abbreviating they can't be abbreviating
Perfect
I can't have abbreviated you can't have abbreviated he can't have abbreviated we can't have abbreviated you can't have abbreviated they can't have abbreviated
V-ing perfect
I can't have been abbreviating you can't have been abbreviating he can't have been abbreviating we can't have been abbreviating you can't have been abbreviating they can't have been abbreviating
Interrogative form
Simple form
can I abbreviate? can you abbreviate? can he abbreviate? can we abbreviate? can you abbreviate? can they abbreviate?
V-ing form
can I be abbreviating? can you be abbreviating? can he be abbreviating? can we be abbreviating? can you be abbreviating? can they be abbreviating?
Perfect
can I have abbreviated? can you have abbreviated? can he have abbreviated? can we have abbreviated? can you have abbreviated? can they have abbreviated?
V-ing perfect
can I have been abbreviating? can you have been abbreviating? can he have been abbreviating? can we have been abbreviating? can you have been abbreviating? can they have been abbreviating?
Interro-negative form
Simple form
can't I abbreviate? can't you abbreviate? can't he abbreviate? can't we abbreviate? can't you abbreviate? can't they abbreviate?
V-ing form
can't I be abbreviating? can't you be abbreviating? can't he be abbreviating? can't we be abbreviating? can't you be abbreviating? can't they be abbreviating?
Perfect
can't I have abbreviated? can't you have abbreviated? can't he have abbreviated? can't we have abbreviated? can't you have abbreviated? can't they have abbreviated?
V-ing perfect
can't I have been abbreviating? can't you have been abbreviating? can't he have been abbreviating? can't we have been abbreviating? can't you have been abbreviating? can't they have been abbreviating?