English verb conjugation
CAN VOICE

Regular verb: voice - voiced - voiced

Affirmation

Simple form	V-ing form
I can voice you can voice he can voice we can voice you can voice they can voice	I can be voicing you can be voicing he can be voicing we can be voicing you can be voicing they can be voicing
Perfect	V-ing perfect
I can have voiced you can have voiced he can have voiced we can have voiced you can have voiced they can have voiced	I can have been voicing you can have been voicing he can have been voicing we can have been voicing you can have been voicing they can have been voicing

Negation

Simple form	V-ing form
I can't voice you can't voice he can't voice we can't voice you can't voice they can't voice	I can't be voicing you can't be voicing he can't be voicing we can't be voicing you can't be voicing they can't be voicing
Perfect	V-ing perfect
I can't have voiced you can't have voiced he can't have voiced we can't have voiced you can't have voiced they can't have voiced	I can't have been voicing you can't have been voicing he can't have been voicing we can't have been voicing you can't have been voicing they can't have been voicing

Interrogative form

Simple form	V-ing form
can I voice? can you voice? can he voice? can we voice? can you voice? can they voice?	can I be voicing? can you be voicing? can he be voicing? can we be voicing? can you be voicing? can they be voicing?
Perfect	V-ing perfect
can I have voiced? can you have voiced? can he have voiced? can we have voiced? can you have voiced? can they have voiced?	can I have been voicing? can you have been voicing? can he have been voicing? can we have been voicing? can you have been voicing? can they have been voicing?

Interro-negative form

Simple form	V-ing form
can't I voice? can't you voice? can't he voice? can't we voice? can't you voice? can't they voice?	can't I be voicing? can't you be voicing? can't he be voicing? can't we be voicing? can't you be voicing? can't they be voicing?
Perfect	V-ing perfect
can't I have voiced? can't you have voiced? can't he have voiced? can't we have voiced? can't you have voiced? can't they have voiced?	can't I have been voicing? can't you have been voicing? can't he have been voicing? can't we have been voicing? can't you have been voicing? can't they have been voicing?