English verb conjugation
CAN EYEWITNESS

Regular verb: eyewitness - eyewitnessed - eyewitnessed

Affirmation

Simple form	V-ing form
I can eyewitness you can eyewitness he can eyewitness we can eyewitness you can eyewitness they can eyewitness	I can be eyewitnessing you can be eyewitnessing he can be eyewitnessing we can be eyewitnessing you can be eyewitnessing they can be eyewitnessing
Perfect	V-ing perfect
I can have eyewitnessed you can have eyewitnessed he 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 he 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
I can't eyewitness you can't eyewitness he 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 he can't be eyewitnessing we can't be eyewitnessing you can't be eyewitnessing they can't be eyewitnessing
Perfect	V-ing perfect
I can't have eyewitnessed you can't have eyewitnessed he 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 he 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
can I eyewitness? can you eyewitness? can he eyewitness? can we eyewitness? can you eyewitness? can they eyewitness?	can I be eyewitnessing? can you be eyewitnessing? can he be eyewitnessing? can we be eyewitnessing? can you be eyewitnessing? can they be eyewitnessing?
Perfect	V-ing perfect
can I have eyewitnessed? can you have eyewitnessed? can he 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 he 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
can't I eyewitness? can't you eyewitness? can't he 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 he be eyewitnessing? can't we be eyewitnessing? can't you be eyewitnessing? can't they be eyewitnessing?
Perfect	V-ing perfect
can't I have eyewitnessed? can't you have eyewitnessed? can't he 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 he have been eyewitnessing? can't we have been eyewitnessing? can't you have been eyewitnessing? can't they have been eyewitnessing?