I can waggle you can waggle he can waggle we can waggle you can waggle they can waggle
V-ing form
I can be waggling you can be waggling he can be waggling we can be waggling you can be waggling they can be waggling
Perfect
I can have waggled you can have waggled he can have waggled we can have waggled you can have waggled they can have waggled
V-ing perfect
I can have been waggling you can have been waggling he can have been waggling we can have been waggling you can have been waggling they can have been waggling
Negation
Simple form
I cannot waggle you cannot waggle he cannot waggle we cannot waggle you cannot waggle they cannot waggle
V-ing form
I cannot be waggling you cannot be waggling he cannot be waggling we cannot be waggling you cannot be waggling they cannot be waggling
Perfect
I cannot have waggled you cannot have waggled he cannot have waggled we cannot have waggled you cannot have waggled they cannot have waggled
V-ing perfect
I cannot have been waggling you cannot have been waggling he cannot have been waggling we cannot have been waggling you cannot have been waggling they cannot have been waggling
Interrogative form
Simple form
can I waggle? can you waggle? can he waggle? can we waggle? can you waggle? can they waggle?
V-ing form
can I be waggling? can you be waggling? can he be waggling? can we be waggling? can you be waggling? can they be waggling?
Perfect
can I have waggled? can you have waggled? can he have waggled? can we have waggled? can you have waggled? can they have waggled?
V-ing perfect
can I have been waggling? can you have been waggling? can he have been waggling? can we have been waggling? can you have been waggling? can they have been waggling?
Interro-negative form
Simple form
can I not waggle? can you not waggle? can he not waggle? can we not waggle? can you not waggle? can they not waggle?
V-ing form
can I not be waggling? can you not be waggling? can he not be waggling? can we not be waggling? can you not be waggling? can they not be waggling?
Perfect
can I not have waggled? can you not have waggled? can he not have waggled? can we not have waggled? can you not have waggled? can they not have waggled?
V-ing perfect
can I not have been waggling? can you not have been waggling? can he not have been waggling? can we not have been waggling? can you not have been waggling? can they not have been waggling?