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 couldn't curtsey you couldn't curtsey she couldn't curtsey we couldn't curtsey you couldn't curtsey they couldn't curtsey	I couldn't be curtseying you couldn't be curtseying she couldn't be curtseying we couldn't be curtseying you couldn't be curtseying they couldn't be curtseying
Perfect	V-ing perfect
I couldn't have curtseyed you couldn't have curtseyed she couldn't have curtseyed we couldn't have curtseyed you couldn't have curtseyed they couldn't have curtseyed	I couldn't have been curtseying you couldn't have been curtseying she couldn't have been curtseying we couldn't have been curtseying you couldn't have been curtseying they couldn't 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
couldn't I curtsey? couldn't you curtsey? couldn't she curtsey? couldn't we curtsey? couldn't you curtsey? couldn't they curtsey?	couldn't I be curtseying? couldn't you be curtseying? couldn't she be curtseying? couldn't we be curtseying? couldn't you be curtseying? couldn't they be curtseying?
Perfect	V-ing perfect
couldn't I have curtseyed? couldn't you have curtseyed? couldn't she have curtseyed? couldn't we have curtseyed? couldn't you have curtseyed? couldn't they have curtseyed?	couldn't I have been curtseying? couldn't you have been curtseying? couldn't she have been curtseying? couldn't we have been curtseying? couldn't you have been curtseying? couldn't they have been curtseying?