I can wax you can wax he can wax we can wax you can wax they can wax
V-ing form
I can be waxing you can be waxing he can be waxing we can be waxing you can be waxing they can be waxing
Perfect
I can have waxed you can have waxed he can have waxed we can have waxed you can have waxed they can have waxed
V-ing perfect
I can have been waxing you can have been waxing he can have been waxing we can have been waxing you can have been waxing they can have been waxing
Negation
Simple form
I cannot wax you cannot wax he cannot wax we cannot wax you cannot wax they cannot wax
V-ing form
I cannot be waxing you cannot be waxing he cannot be waxing we cannot be waxing you cannot be waxing they cannot be waxing
Perfect
I cannot have waxed you cannot have waxed he cannot have waxed we cannot have waxed you cannot have waxed they cannot have waxed
V-ing perfect
I cannot have been waxing you cannot have been waxing he cannot have been waxing we cannot have been waxing you cannot have been waxing they cannot have been waxing
Interrogative form
Simple form
can I wax? can you wax? can he wax? can we wax? can you wax? can they wax?
V-ing form
can I be waxing? can you be waxing? can he be waxing? can we be waxing? can you be waxing? can they be waxing?
Perfect
can I have waxed? can you have waxed? can he have waxed? can we have waxed? can you have waxed? can they have waxed?
V-ing perfect
can I have been waxing? can you have been waxing? can he have been waxing? can we have been waxing? can you have been waxing? can they have been waxing?
Interro-negative form
Simple form
can I not wax? can you not wax? can he not wax? can we not wax? can you not wax? can they not wax?
V-ing form
can I not be waxing? can you not be waxing? can he not be waxing? can we not be waxing? can you not be waxing? can they not be waxing?
Perfect
can I not have waxed? can you not have waxed? can he not have waxed? can we not have waxed? can you not have waxed? can they not have waxed?
V-ing perfect
can I not have been waxing? can you not have been waxing? can he not have been waxing? can we not have been waxing? can you not have been waxing? can they not have been waxing?