English verb conjugation
CAN SPY

Regular verb: spy - spied - spied

Affirmation

Simple form	V-ing form
I can spy you can spy she can spy we can spy you can spy they can spy	I can be spying you can be spying she can be spying we can be spying you can be spying they can be spying
Perfect	V-ing perfect
I can have spied you can have spied she can have spied we can have spied you can have spied they can have spied	I can have been spying you can have been spying she can have been spying we can have been spying you can have been spying they can have been spying

Negation

Simple form	V-ing form
I cannot spy you cannot spy she cannot spy we cannot spy you cannot spy they cannot spy	I cannot be spying you cannot be spying she cannot be spying we cannot be spying you cannot be spying they cannot be spying
Perfect	V-ing perfect
I cannot have spied you cannot have spied she cannot have spied we cannot have spied you cannot have spied they cannot have spied	I cannot have been spying you cannot have been spying she cannot have been spying we cannot have been spying you cannot have been spying they cannot have been spying

Interrogative form

Simple form	V-ing form
can I spy? can you spy? can she spy? can we spy? can you spy? can they spy?	can I be spying? can you be spying? can she be spying? can we be spying? can you be spying? can they be spying?
Perfect	V-ing perfect
can I have spied? can you have spied? can she have spied? can we have spied? can you have spied? can they have spied?	can I have been spying? can you have been spying? can she have been spying? can we have been spying? can you have been spying? can they have been spying?

Interro-negative form

Simple form	V-ing form
can I not spy? can you not spy? can she not spy? can we not spy? can you not spy? can they not spy?	can I not be spying? can you not be spying? can she not be spying? can we not be spying? can you not be spying? can they not be spying?
Perfect	V-ing perfect
can I not have spied? can you not have spied? can she not have spied? can we not have spied? can you not have spied? can they not have spied?	can I not have been spying? can you not have been spying? can she not have been spying? can we not have been spying? can you not have been spying? can they not have been spying?