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