English verb conjugation
CAN CURTSY

Regular verb: curtsy - curtsied - curtsied

Affirmation

Simple form	V-ing form
I can curtsy you can curtsy he can curtsy we can curtsy you can curtsy they can curtsy	I can be curtsying you can be curtsying he can be curtsying we can be curtsying you can be curtsying they can be curtsying
Perfect	V-ing perfect
I can have curtsied you can have curtsied he can have curtsied we can have curtsied you can have curtsied they can have curtsied	I can have been curtsying you can have been curtsying he can have been curtsying we can have been curtsying you can have been curtsying they can have been curtsying

Negation

Simple form	V-ing form
I cannot curtsy you cannot curtsy he cannot curtsy we cannot curtsy you cannot curtsy they cannot curtsy	I cannot be curtsying you cannot be curtsying he cannot be curtsying we cannot be curtsying you cannot be curtsying they cannot be curtsying
Perfect	V-ing perfect
I cannot have curtsied you cannot have curtsied he cannot have curtsied we cannot have curtsied you cannot have curtsied they cannot have curtsied	I cannot have been curtsying you cannot have been curtsying he cannot have been curtsying we cannot have been curtsying you cannot have been curtsying they cannot have been curtsying

Interrogative form

Simple form	V-ing form
can I curtsy? can you curtsy? can he curtsy? can we curtsy? can you curtsy? can they curtsy?	can I be curtsying? can you be curtsying? can he be curtsying? can we be curtsying? can you be curtsying? can they be curtsying?
Perfect	V-ing perfect
can I have curtsied? can you have curtsied? can he have curtsied? can we have curtsied? can you have curtsied? can they have curtsied?	can I have been curtsying? can you have been curtsying? can he have been curtsying? can we have been curtsying? can you have been curtsying? can they have been curtsying?

Interro-negative form

Simple form	V-ing form
can I not curtsy? can you not curtsy? can he not curtsy? can we not curtsy? can you not curtsy? can they not curtsy?	can I not be curtsying? can you not be curtsying? can he not be curtsying? can we not be curtsying? can you not be curtsying? can they not be curtsying?
Perfect	V-ing perfect
can I not have curtsied? can you not have curtsied? can he not have curtsied? can we not have curtsied? can you not have curtsied? can they not have curtsied?	can I not have been curtsying? can you not have been curtsying? can he not have been curtsying? can we not have been curtsying? can you not have been curtsying? can they not have been curtsying?