I must curette you must curette he must curette we must curette you must curette they must curette
V-ing form
I must be curetting you must be curetting he must be curetting we must be curetting you must be curetting they must be curetting
Perfect
I must have curetted you must have curetted he must have curetted we must have curetted you must have curetted they must have curetted
V-ing perfect
I must have been curetting you must have been curetting he must have been curetting we must have been curetting you must have been curetting they must have been curetting
Negation
Simple form
I mustn't curette you mustn't curette he mustn't curette we mustn't curette you mustn't curette they mustn't curette
V-ing form
I mustn't be curetting you mustn't be curetting he mustn't be curetting we mustn't be curetting you mustn't be curetting they mustn't be curetting
Perfect
I mustn't have curetted you mustn't have curetted he mustn't have curetted we mustn't have curetted you mustn't have curetted they mustn't have curetted
V-ing perfect
I mustn't have been curetting you mustn't have been curetting he mustn't have been curetting we mustn't have been curetting you mustn't have been curetting they mustn't have been curetting
Interrogative form
Simple form
must I curette? must you curette? must he curette? must we curette? must you curette? must they curette?
V-ing form
must I be curetting? must you be curetting? must he be curetting? must we be curetting? must you be curetting? must they be curetting?
Perfect
must I have curetted? must you have curetted? must he have curetted? must we have curetted? must you have curetted? must they have curetted?
V-ing perfect
must I have been curetting? must you have been curetting? must he have been curetting? must we have been curetting? must you have been curetting? must they have been curetting?
Interro-negative form
Simple form
mustn't I curette? mustn't you curette? mustn't he curette? mustn't we curette? mustn't you curette? mustn't they curette?
V-ing form
mustn't I be curetting? mustn't you be curetting? mustn't he be curetting? mustn't we be curetting? mustn't you be curetting? mustn't they be curetting?
Perfect
mustn't I have curetted? mustn't you have curetted? mustn't he have curetted? mustn't we have curetted? mustn't you have curetted? mustn't they have curetted?
V-ing perfect
mustn't I have been curetting? mustn't you have been curetting? mustn't he have been curetting? mustn't we have been curetting? mustn't you have been curetting? mustn't they have been curetting?