English verb conjugation
CAN CURTSEY

Regular verb: curtsey - curtseyed - curtseyed

Affirmation

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

Negation

Simple form	V-ing form
I can't curtsey you can't curtsey he can't curtsey we can't curtsey you can't curtsey they can't curtsey	I can't be curtseying you can't be curtseying he can't be curtseying we can't be curtseying you can't be curtseying they can't be curtseying
Perfect	V-ing perfect
I can't have curtseyed you can't have curtseyed he can't have curtseyed we can't have curtseyed you can't have curtseyed they can't have curtseyed	I can't have been curtseying you can't have been curtseying he can't have been curtseying we can't have been curtseying you can't have been curtseying they can't have been curtseying

Interrogative form

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

Interro-negative form

Simple form	V-ing form
can't I curtsey? can't you curtsey? can't he curtsey? can't we curtsey? can't you curtsey? can't they curtsey?	can't I be curtseying? can't you be curtseying? can't he be curtseying? can't we be curtseying? can't you be curtseying? can't they be curtseying?
Perfect	V-ing perfect
can't I have curtseyed? can't you have curtseyed? can't he have curtseyed? can't we have curtseyed? can't you have curtseyed? can't they have curtseyed?	can't I have been curtseying? can't you have been curtseying? can't he have been curtseying? can't we have been curtseying? can't you have been curtseying? can't they have been curtseying?