I can wave you can wave she can wave we can wave you can wave they can wave
V-ing form
I can be waving you can be waving she can be waving we can be waving you can be waving they can be waving
Perfect
I can have waved you can have waved she can have waved we can have waved you can have waved they can have waved
V-ing perfect
I can have been waving you can have been waving she can have been waving we can have been waving you can have been waving they can have been waving
Negation
Simple form
I cannot wave you cannot wave she cannot wave we cannot wave you cannot wave they cannot wave
V-ing form
I cannot be waving you cannot be waving she cannot be waving we cannot be waving you cannot be waving they cannot be waving
Perfect
I cannot have waved you cannot have waved she cannot have waved we cannot have waved you cannot have waved they cannot have waved
V-ing perfect
I cannot have been waving you cannot have been waving she cannot have been waving we cannot have been waving you cannot have been waving they cannot have been waving
Interrogative form
Simple form
can I wave? can you wave? can she wave? can we wave? can you wave? can they wave?
V-ing form
can I be waving? can you be waving? can she be waving? can we be waving? can you be waving? can they be waving?
Perfect
can I have waved? can you have waved? can she have waved? can we have waved? can you have waved? can they have waved?
V-ing perfect
can I have been waving? can you have been waving? can she have been waving? can we have been waving? can you have been waving? can they have been waving?
Interro-negative form
Simple form
can I not wave? can you not wave? can she not wave? can we not wave? can you not wave? can they not wave?
V-ing form
can I not be waving? can you not be waving? can she not be waving? can we not be waving? can you not be waving? can they not be waving?
Perfect
can I not have waved? can you not have waved? can she not have waved? can we not have waved? can you not have waved? can they not have waved?
V-ing perfect
can I not have been waving? can you not have been waving? can she not have been waving? can we not have been waving? can you not have been waving? can they not have been waving?