English verb conjugation
COULD CURTSEY

Regular verb: curtsey - curtseyed - curtseyed

Affirmation

Simple form	V-ing form
I could curtsey you could curtsey she could curtsey we could curtsey you could curtsey they could curtsey	I could be curtseying you could be curtseying she could be curtseying we could be curtseying you could be curtseying they could be curtseying
Perfect	V-ing perfect
I could have curtseyed you could have curtseyed she could have curtseyed we could have curtseyed you could have curtseyed they could have curtseyed	I could have been curtseying you could have been curtseying she could have been curtseying we could have been curtseying you could have been curtseying they could have been curtseying

Negation

Simple form	V-ing form
I could not curtsey you could not curtsey she could not curtsey we could not curtsey you could not curtsey they could not curtsey	I could not be curtseying you could not be curtseying she could not be curtseying we could not be curtseying you could not be curtseying they could not be curtseying
Perfect	V-ing perfect
I could not have curtseyed you could not have curtseyed she could not have curtseyed we could not have curtseyed you could not have curtseyed they could not have curtseyed	I could not have been curtseying you could not have been curtseying she could not have been curtseying we could not have been curtseying you could not have been curtseying they could not have been curtseying

Interrogative form

Simple form	V-ing form
could I curtsey? could you curtsey? could she curtsey? could we curtsey? could you curtsey? could they curtsey?	could I be curtseying? could you be curtseying? could she be curtseying? could we be curtseying? could you be curtseying? could they be curtseying?
Perfect	V-ing perfect
could I have curtseyed? could you have curtseyed? could she have curtseyed? could we have curtseyed? could you have curtseyed? could they have curtseyed?	could I have been curtseying? could you have been curtseying? could she have been curtseying? could we have been curtseying? could you have been curtseying? could they have been curtseying?

Interro-negative form

Simple form	V-ing form
could I not curtsey? could you not curtsey? could she not curtsey? could we not curtsey? could you not curtsey? could they not curtsey?	could I not be curtseying? could you not be curtseying? could she not be curtseying? could we not be curtseying? could you not be curtseying? could they not be curtseying?
Perfect	V-ing perfect
could I not have curtseyed? could you not have curtseyed? could she not have curtseyed? could we not have curtseyed? could you not have curtseyed? could they not have curtseyed?	could I not have been curtseying? could you not have been curtseying? could she not have been curtseying? could we not have been curtseying? could you not have been curtseying? could they not have been curtseying?