I can vegetate you can vegetate he can vegetate we can vegetate you can vegetate they can vegetate
V-ing form
I can be vegetating you can be vegetating he can be vegetating we can be vegetating you can be vegetating they can be vegetating
Perfect
I can have vegetated you can have vegetated he can have vegetated we can have vegetated you can have vegetated they can have vegetated
V-ing perfect
I can have been vegetating you can have been vegetating he can have been vegetating we can have been vegetating you can have been vegetating they can have been vegetating
Negation
Simple form
I can't vegetate you can't vegetate he can't vegetate we can't vegetate you can't vegetate they can't vegetate
V-ing form
I can't be vegetating you can't be vegetating he can't be vegetating we can't be vegetating you can't be vegetating they can't be vegetating
Perfect
I can't have vegetated you can't have vegetated he can't have vegetated we can't have vegetated you can't have vegetated they can't have vegetated
V-ing perfect
I can't have been vegetating you can't have been vegetating he can't have been vegetating we can't have been vegetating you can't have been vegetating they can't have been vegetating
Interrogative form
Simple form
can I vegetate? can you vegetate? can he vegetate? can we vegetate? can you vegetate? can they vegetate?
V-ing form
can I be vegetating? can you be vegetating? can he be vegetating? can we be vegetating? can you be vegetating? can they be vegetating?
Perfect
can I have vegetated? can you have vegetated? can he have vegetated? can we have vegetated? can you have vegetated? can they have vegetated?
V-ing perfect
can I have been vegetating? can you have been vegetating? can he have been vegetating? can we have been vegetating? can you have been vegetating? can they have been vegetating?
Interro-negative form
Simple form
can't I vegetate? can't you vegetate? can't he vegetate? can't we vegetate? can't you vegetate? can't they vegetate?
V-ing form
can't I be vegetating? can't you be vegetating? can't he be vegetating? can't we be vegetating? can't you be vegetating? can't they be vegetating?
Perfect
can't I have vegetated? can't you have vegetated? can't he have vegetated? can't we have vegetated? can't you have vegetated? can't they have vegetated?
V-ing perfect
can't I have been vegetating? can't you have been vegetating? can't he have been vegetating? can't we have been vegetating? can't you have been vegetating? can't they have been vegetating?