English verb conjugation
COULD HARBINGER

Regular verb: harbinger - harbingered - harbingered

Affirmation

Simple form	V-ing form
I could harbinger you could harbinger he could harbinger we could harbinger you could harbinger they could harbinger	I could be harbingering you could be harbingering he could be harbingering we could be harbingering you could be harbingering they could be harbingering
Perfect	V-ing perfect
I could have harbingered you could have harbingered he could have harbingered we could have harbingered you could have harbingered they could have harbingered	I could have been harbingering you could have been harbingering he could have been harbingering we could have been harbingering you could have been harbingering they could have been harbingering

Negation

Simple form	V-ing form
I couldn't harbinger you couldn't harbinger he couldn't harbinger we couldn't harbinger you couldn't harbinger they couldn't harbinger	I couldn't be harbingering you couldn't be harbingering he couldn't be harbingering we couldn't be harbingering you couldn't be harbingering they couldn't be harbingering
Perfect	V-ing perfect
I couldn't have harbingered you couldn't have harbingered he couldn't have harbingered we couldn't have harbingered you couldn't have harbingered they couldn't have harbingered	I couldn't have been harbingering you couldn't have been harbingering he couldn't have been harbingering we couldn't have been harbingering you couldn't have been harbingering they couldn't have been harbingering

Interrogative form

Simple form	V-ing form
could I harbinger? could you harbinger? could he harbinger? could we harbinger? could you harbinger? could they harbinger?	could I be harbingering? could you be harbingering? could he be harbingering? could we be harbingering? could you be harbingering? could they be harbingering?
Perfect	V-ing perfect
could I have harbingered? could you have harbingered? could he have harbingered? could we have harbingered? could you have harbingered? could they have harbingered?	could I have been harbingering? could you have been harbingering? could he have been harbingering? could we have been harbingering? could you have been harbingering? could they have been harbingering?

Interro-negative form

Simple form	V-ing form
couldn't I harbinger? couldn't you harbinger? couldn't he harbinger? couldn't we harbinger? couldn't you harbinger? couldn't they harbinger?	couldn't I be harbingering? couldn't you be harbingering? couldn't he be harbingering? couldn't we be harbingering? couldn't you be harbingering? couldn't they be harbingering?
Perfect	V-ing perfect
couldn't I have harbingered? couldn't you have harbingered? couldn't he have harbingered? couldn't we have harbingered? couldn't you have harbingered? couldn't they have harbingered?	couldn't I have been harbingering? couldn't you have been harbingering? couldn't he have been harbingering? couldn't we have been harbingering? couldn't you have been harbingering? couldn't they have been harbingering?