can undeceive
Regular verb: undeceive - undeceived- undeceived

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can undeceive
you can undeceive
he can undeceive
we can undeceive
you can undeceive
they can undeceive 	I can be undeceiving
you can be undeceiving
he can be undeceiving
we can be undeceiving
you can be undeceiving
they can be undeceiving	I can have undeceived
you can have undeceived
he can have undeceived
we can have undeceived
you can have undeceived
they can have undeceived	I can have been undeceiving
you can have been undeceiving
he can have been undeceiving
we can have been undeceiving
you can have been undeceiving
they can have been undeceiving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot undeceive
you cannot undeceive
he cannot undeceive
we cannot undeceive
you cannot undeceive
they cannot undeceive 	I cannot be undeceiving
you cannot be undeceiving
he cannot be undeceiving
we cannot be undeceiving
you cannot be undeceiving
they cannot be undeceiving	I cannot have undeceived
you cannot have undeceived
he cannot have undeceived
we cannot have undeceived
you cannot have undeceived
they cannot have undeceived	I cannot have been undeceiving
you cannot have been undeceiving
he cannot have been undeceiving
we cannot have been undeceiving
you cannot have been undeceiving
they cannot have been undeceiving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I undeceive?
can you undeceive?
can he undeceive?
can we undeceive?
can you undeceive?
can they undeceive? 	can I be undeceiving?
can you be undeceiving?
can he be undeceiving?
can we be undeceiving?
can you be undeceiving?
can they be undeceiving? 	can I have undeceived?
can you have undeceived?
can he have undeceived?
can we have undeceived?
can you have undeceived?
can they have undeceived? 	can I have been undeceiving?
can you have been undeceiving?
can he have been undeceiving?
can we have been undeceiving?
can you have been undeceiving?
can they have been undeceiving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not undeceive?
can you not undeceive?
can he not undeceive?
can we not undeceive?
can you not undeceive?
can they not undeceive? 	can I not be undeceiving?
can you not be undeceiving?
can he not be undeceiving?
can we not be undeceiving?
can you not be undeceiving?
can they not be undeceiving? 	can I not have undeceived?
can you not have undeceived?
can he not have undeceived?
can we not have undeceived?
can you not have undeceived?
can they not have undeceived? 	can I not have been undeceiving?
can you not have been undeceiving?
can he not have been undeceiving?
can we not have been undeceiving?
can you not have been undeceiving?
can they not have been undeceiving?