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 can't eyewitness
you can't eyewitness
she can't eyewitness
we can't eyewitness
you can't eyewitness
they can't eyewitness 	I can't be eyewitnessing
you can't be eyewitnessing
she can't be eyewitnessing
we can't be eyewitnessing
you can't be eyewitnessing
they can't be eyewitnessing	I can't have eyewitnessed
you can't have eyewitnessed
she can't have eyewitnessed
we can't have eyewitnessed
you can't have eyewitnessed
they can't have eyewitnessed	I can't have been eyewitnessing
you can't have been eyewitnessing
she can't have been eyewitnessing
we can't have been eyewitnessing
you can't have been eyewitnessing
they can't 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't I eyewitness?
can't you eyewitness?
can't she eyewitness?
can't we eyewitness?
can't you eyewitness?
can't they eyewitness? 	can't I be eyewitnessing?
can't you be eyewitnessing?
can't she be eyewitnessing?
can't we be eyewitnessing?
can't you be eyewitnessing?
can't they be eyewitnessing? 	can't I have eyewitnessed?
can't you have eyewitnessed?
can't she have eyewitnessed?
can't we have eyewitnessed?
can't you have eyewitnessed?
can't they have eyewitnessed? 	can't I have been eyewitnessing?
can't you have been eyewitnessing?
can't she have been eyewitnessing?
can't we have been eyewitnessing?
can't you have been eyewitnessing?
can't they have been eyewitnessing?