Regular verb: do it yourself - do it yourselfed - do it yourselfed
Warning, this verb may not exist. Conjugation is given as example.
Affirmation
Simple form
I could do it yourself you could do it yourself he could do it yourself we could do it yourself you could do it yourself they could do it yourself
V-ing form
I could be do it yourselfing you could be do it yourselfing he could be do it yourselfing we could be do it yourselfing you could be do it yourselfing they could be do it yourselfing
Perfect
I could have do it yourselfed you could have do it yourselfed he could have do it yourselfed we could have do it yourselfed you could have do it yourselfed they could have do it yourselfed
V-ing perfect
I could have been do it yourselfing you could have been do it yourselfing he could have been do it yourselfing we could have been do it yourselfing you could have been do it yourselfing they could have been do it yourselfing
Negation
Simple form
I could not do it yourself you could not do it yourself he could not do it yourself we could not do it yourself you could not do it yourself they could not do it yourself
V-ing form
I could not be do it yourselfing you could not be do it yourselfing he could not be do it yourselfing we could not be do it yourselfing you could not be do it yourselfing they could not be do it yourselfing
Perfect
I could not have do it yourselfed you could not have do it yourselfed he could not have do it yourselfed we could not have do it yourselfed you could not have do it yourselfed they could not have do it yourselfed
V-ing perfect
I could not have been do it yourselfing you could not have been do it yourselfing he could not have been do it yourselfing we could not have been do it yourselfing you could not have been do it yourselfing they could not have been do it yourselfing
Interrogative form
Simple form
could I do it yourself? could you do it yourself? could he do it yourself? could we do it yourself? could you do it yourself? could they do it yourself?
V-ing form
could I be do it yourselfing? could you be do it yourselfing? could he be do it yourselfing? could we be do it yourselfing? could you be do it yourselfing? could they be do it yourselfing?
Perfect
could I have do it yourselfed? could you have do it yourselfed? could he have do it yourselfed? could we have do it yourselfed? could you have do it yourselfed? could they have do it yourselfed?
V-ing perfect
could I have been do it yourselfing? could you have been do it yourselfing? could he have been do it yourselfing? could we have been do it yourselfing? could you have been do it yourselfing? could they have been do it yourselfing?
Interro-negative form
Simple form
could I not do it yourself? could you not do it yourself? could he not do it yourself? could we not do it yourself? could you not do it yourself? could they not do it yourself?
V-ing form
could I not be do it yourselfing? could you not be do it yourselfing? could he not be do it yourselfing? could we not be do it yourselfing? could you not be do it yourselfing? could they not be do it yourselfing?
Perfect
could I not have do it yourselfed? could you not have do it yourselfed? could he not have do it yourselfed? could we not have do it yourselfed? could you not have do it yourselfed? could they not have do it yourselfed?
V-ing perfect
could I not have been do it yourselfing? could you not have been do it yourselfing? could he not have been do it yourselfing? could we not have been do it yourselfing? could you not have been do it yourselfing? could they not have been do it yourselfing?