Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could shoulder shoulder you could shoulder shoulder he could shoulder shoulder we could shoulder shoulder you could shoulder shoulder they could shoulder shoulder
V-ing form
I could be shoulder shouldering you could be shoulder shouldering he could be shoulder shouldering we could be shoulder shouldering you could be shoulder shouldering they could be shoulder shouldering
Perfect
I could have shoulder shouldered you could have shoulder shouldered he could have shoulder shouldered we could have shoulder shouldered you could have shoulder shouldered they could have shoulder shouldered
V-ing perfect
I could have been shoulder shouldering you could have been shoulder shouldering he could have been shoulder shouldering we could have been shoulder shouldering you could have been shoulder shouldering they could have been shoulder shouldering
Negation
Simple form
I could not shoulder shoulder you could not shoulder shoulder he could not shoulder shoulder we could not shoulder shoulder you could not shoulder shoulder they could not shoulder shoulder
V-ing form
I could not be shoulder shouldering you could not be shoulder shouldering he could not be shoulder shouldering we could not be shoulder shouldering you could not be shoulder shouldering they could not be shoulder shouldering
Perfect
I could not have shoulder shouldered you could not have shoulder shouldered he could not have shoulder shouldered we could not have shoulder shouldered you could not have shoulder shouldered they could not have shoulder shouldered
V-ing perfect
I could not have been shoulder shouldering you could not have been shoulder shouldering he could not have been shoulder shouldering we could not have been shoulder shouldering you could not have been shoulder shouldering they could not have been shoulder shouldering
Interrogative form
Simple form
could I shoulder shoulder? could you shoulder shoulder? could he shoulder shoulder? could we shoulder shoulder? could you shoulder shoulder? could they shoulder shoulder?
V-ing form
could I be shoulder shouldering? could you be shoulder shouldering? could he be shoulder shouldering? could we be shoulder shouldering? could you be shoulder shouldering? could they be shoulder shouldering?
Perfect
could I have shoulder shouldered? could you have shoulder shouldered? could he have shoulder shouldered? could we have shoulder shouldered? could you have shoulder shouldered? could they have shoulder shouldered?
V-ing perfect
could I have been shoulder shouldering? could you have been shoulder shouldering? could he have been shoulder shouldering? could we have been shoulder shouldering? could you have been shoulder shouldering? could they have been shoulder shouldering?
Interro-negative form
Simple form
could I not shoulder shoulder? could you not shoulder shoulder? could he not shoulder shoulder? could we not shoulder shoulder? could you not shoulder shoulder? could they not shoulder shoulder?
V-ing form
could I not be shoulder shouldering? could you not be shoulder shouldering? could he not be shoulder shouldering? could we not be shoulder shouldering? could you not be shoulder shouldering? could they not be shoulder shouldering?
Perfect
could I not have shoulder shouldered? could you not have shoulder shouldered? could he not have shoulder shouldered? could we not have shoulder shouldered? could you not have shoulder shouldered? could they not have shoulder shouldered?
V-ing perfect
could I not have been shoulder shouldering? could you not have been shoulder shouldering? could he not have been shoulder shouldering? could we not have been shoulder shouldering? could you not have been shoulder shouldering? could they not have been shoulder shouldering?