English verb conjugation
COULD TRAILER

Regular verb: trailer - trailered - trailered

Affirmation

Simple form	V-ing form
I could trailer you could trailer he could trailer we could trailer you could trailer they could trailer	I could be trailering you could be trailering he could be trailering we could be trailering you could be trailering they could be trailering
Perfect	V-ing perfect
I could have trailered you could have trailered he could have trailered we could have trailered you could have trailered they could have trailered	I could have been trailering you could have been trailering he could have been trailering we could have been trailering you could have been trailering they could have been trailering

Negation

Simple form	V-ing form
I could not trailer you could not trailer he could not trailer we could not trailer you could not trailer they could not trailer	I could not be trailering you could not be trailering he could not be trailering we could not be trailering you could not be trailering they could not be trailering
Perfect	V-ing perfect
I could not have trailered you could not have trailered he could not have trailered we could not have trailered you could not have trailered they could not have trailered	I could not have been trailering you could not have been trailering he could not have been trailering we could not have been trailering you could not have been trailering they could not have been trailering

Interrogative form

Simple form	V-ing form
could I trailer? could you trailer? could he trailer? could we trailer? could you trailer? could they trailer?	could I be trailering? could you be trailering? could he be trailering? could we be trailering? could you be trailering? could they be trailering?
Perfect	V-ing perfect
could I have trailered? could you have trailered? could he have trailered? could we have trailered? could you have trailered? could they have trailered?	could I have been trailering? could you have been trailering? could he have been trailering? could we have been trailering? could you have been trailering? could they have been trailering?

Interro-negative form

Simple form	V-ing form
could I not trailer? could you not trailer? could he not trailer? could we not trailer? could you not trailer? could they not trailer?	could I not be trailering? could you not be trailering? could he not be trailering? could we not be trailering? could you not be trailering? could they not be trailering?
Perfect	V-ing perfect
could I not have trailered? could you not have trailered? could he not have trailered? could we not have trailered? could you not have trailered? could they not have trailered?	could I not have been trailering? could you not have been trailering? could he not have been trailering? could we not have been trailering? could you not have been trailering? could they not have been trailering?