can eyewitness
Regular verb: eyewitness - eyewitnessed- eyewitnessed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I can eyewitness
you can eyewitness
she can eyewitness
we can eyewitness
you can eyewitness
they can eyewitness 	I can be eyewitnessing
you can be eyewitnessing
she can be eyewitnessing
we can be eyewitnessing
you can be eyewitnessing
they can be eyewitnessing	I can have eyewitnessed
you can have eyewitnessed
she can have eyewitnessed
we can have eyewitnessed
you can have eyewitnessed
they can have eyewitnessed	I can have been eyewitnessing
you can have been eyewitnessing
she can have been eyewitnessing
we can have been eyewitnessing
you can have been eyewitnessing
they can have been eyewitnessing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I cannot eyewitness
you cannot eyewitness
she cannot eyewitness
we cannot eyewitness
you cannot eyewitness
they cannot eyewitness 	I cannot be eyewitnessing
you cannot be eyewitnessing
she cannot be eyewitnessing
we cannot be eyewitnessing
you cannot be eyewitnessing
they cannot be eyewitnessing	I cannot have eyewitnessed
you cannot have eyewitnessed
she cannot have eyewitnessed
we cannot have eyewitnessed
you cannot have eyewitnessed
they cannot have eyewitnessed	I cannot have been eyewitnessing
you cannot have been eyewitnessing
she cannot have been eyewitnessing
we cannot have been eyewitnessing
you cannot have been eyewitnessing
they cannot have been eyewitnessing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I eyewitness?
can you eyewitness?
can she eyewitness?
can we eyewitness?
can you eyewitness?
can they eyewitness? 	can I be eyewitnessing?
can you be eyewitnessing?
can she be eyewitnessing?
can we be eyewitnessing?
can you be eyewitnessing?
can they be eyewitnessing? 	can I have eyewitnessed?
can you have eyewitnessed?
can she have eyewitnessed?
can we have eyewitnessed?
can you have eyewitnessed?
can they have eyewitnessed? 	can I have been eyewitnessing?
can you have been eyewitnessing?
can she have been eyewitnessing?
can we have been eyewitnessing?
can you have been eyewitnessing?
can they have been eyewitnessing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
can I not eyewitness?
can you not eyewitness?
can she not eyewitness?
can we not eyewitness?
can you not eyewitness?
can they not eyewitness? 	can I not be eyewitnessing?
can you not be eyewitnessing?
can she not be eyewitnessing?
can we not be eyewitnessing?
can you not be eyewitnessing?
can they not be eyewitnessing? 	can I not have eyewitnessed?
can you not have eyewitnessed?
can she not have eyewitnessed?
can we not have eyewitnessed?
can you not have eyewitnessed?
can they not have eyewitnessed? 	can I not have been eyewitnessing?
can you not have been eyewitnessing?
can she not have been eyewitnessing?
can we not have been eyewitnessing?
can you not have been eyewitnessing?
can they not have been eyewitnessing?