English verb conjugation
COULD VOICE

Regular verb: voice - voiced - voiced

Affirmation

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

Negation

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

Interrogative form

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

Interro-negative form

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