I can doze you can doze he can doze we can doze you can doze they can doze
V-ing form
I can be dozing you can be dozing he can be dozing we can be dozing you can be dozing they can be dozing
Perfect
I can have dozed you can have dozed he can have dozed we can have dozed you can have dozed they can have dozed
V-ing perfect
I can have been dozing you can have been dozing he can have been dozing we can have been dozing you can have been dozing they can have been dozing
Negation
Simple form
I cannot doze you cannot doze he cannot doze we cannot doze you cannot doze they cannot doze
V-ing form
I cannot be dozing you cannot be dozing he cannot be dozing we cannot be dozing you cannot be dozing they cannot be dozing
Perfect
I cannot have dozed you cannot have dozed he cannot have dozed we cannot have dozed you cannot have dozed they cannot have dozed
V-ing perfect
I cannot have been dozing you cannot have been dozing he cannot have been dozing we cannot have been dozing you cannot have been dozing they cannot have been dozing
Interrogative form
Simple form
can I doze? can you doze? can he doze? can we doze? can you doze? can they doze?
V-ing form
can I be dozing? can you be dozing? can he be dozing? can we be dozing? can you be dozing? can they be dozing?
Perfect
can I have dozed? can you have dozed? can he have dozed? can we have dozed? can you have dozed? can they have dozed?
V-ing perfect
can I have been dozing? can you have been dozing? can he have been dozing? can we have been dozing? can you have been dozing? can they have been dozing?
Interro-negative form
Simple form
can I not doze? can you not doze? can he not doze? can we not doze? can you not doze? can they not doze?
V-ing form
can I not be dozing? can you not be dozing? can he not be dozing? can we not be dozing? can you not be dozing? can they not be dozing?
Perfect
can I not have dozed? can you not have dozed? can he not have dozed? can we not have dozed? can you not have dozed? can they not have dozed?
V-ing perfect
can I not have been dozing? can you not have been dozing? can he not have been dozing? can we not have been dozing? can you not have been dozing? can they not have been dozing?