I can curette you can curette she can curette we can curette you can curette they can curette
V-ing form
I can be curetting you can be curetting she can be curetting we can be curetting you can be curetting they can be curetting
Perfect
I can have curetted you can have curetted she can have curetted we can have curetted you can have curetted they can have curetted
V-ing perfect
I can have been curetting you can have been curetting she can have been curetting we can have been curetting you can have been curetting they can have been curetting
Negation
Simple form
I cannot curette you cannot curette she cannot curette we cannot curette you cannot curette they cannot curette
V-ing form
I cannot be curetting you cannot be curetting she cannot be curetting we cannot be curetting you cannot be curetting they cannot be curetting
Perfect
I cannot have curetted you cannot have curetted she cannot have curetted we cannot have curetted you cannot have curetted they cannot have curetted
V-ing perfect
I cannot have been curetting you cannot have been curetting she cannot have been curetting we cannot have been curetting you cannot have been curetting they cannot have been curetting
Interrogative form
Simple form
can I curette? can you curette? can she curette? can we curette? can you curette? can they curette?
V-ing form
can I be curetting? can you be curetting? can she be curetting? can we be curetting? can you be curetting? can they be curetting?
Perfect
can I have curetted? can you have curetted? can she have curetted? can we have curetted? can you have curetted? can they have curetted?
V-ing perfect
can I have been curetting? can you have been curetting? can she have been curetting? can we have been curetting? can you have been curetting? can they have been curetting?
Interro-negative form
Simple form
can I not curette? can you not curette? can she not curette? can we not curette? can you not curette? can they not curette?
V-ing form
can I not be curetting? can you not be curetting? can she not be curetting? can we not be curetting? can you not be curetting? can they not be curetting?
Perfect
can I not have curetted? can you not have curetted? can she not have curetted? can we not have curetted? can you not have curetted? can they not have curetted?
V-ing perfect
can I not have been curetting? can you not have been curetting? can she not have been curetting? can we not have been curetting? can you not have been curetting? can they not have been curetting?