I ought to stem you ought to stem he ought to stem we ought to stem you ought to stem they ought to stem
V-ing form
I ought to be stemming you ought to be stemming he ought to be stemming we ought to be stemming you ought to be stemming they ought to be stemming
Perfect
I ought to have stemmed you ought to have stemmed he ought to have stemmed we ought to have stemmed you ought to have stemmed they ought to have stemmed
V-ing perfect
I ought to have been stemming you ought to have been stemming he ought to have been stemming we ought to have been stemming you ought to have been stemming they ought to have been stemming
Negation
Simple form
I ought not to stem you ought not to stem he ought not to stem we ought not to stem you ought not to stem they ought not to stem
V-ing form
I ought not to stemming you ought not to stemming he ought not to stemming we ought not to stemming you ought not to stemming they ought not to stemming
Perfect
I ought not to have stemmed you ought not to have stemmed he ought not to have stemmed we ought not to have stemmed you ought not to have stemmed they ought not to have stemmed
V-ing perfect
I ought not to have been stemming you ought not to have been stemming he ought not to have been stemming we ought not to have been stemming you ought not to have been stemming they ought not to have been stemming
Interrogative form
Simple form
ought to I stem? ought to you stem? ought to he stem? ought to we stem? ought to you stem? ought to they stem?
V-ing form
ought to I be stemming? ought to you be stemming? ought to he be stemming? ought to we be stemming? ought to you be stemming? ought to they be stemming?
Perfect
ought to I have stemmed? ought to you have stemmed? ought to he have stemmed? ought to we have stemmed? ought to you have stemmed? ought to they have stemmed?
V-ing perfect
ought to I have been stemming? ought to you have been stemming? ought to he have been stemming? ought to we have been stemming? ought to you have been stemming? ought to they have been stemming?
Interro-negative form
Simple form
ought I not to stem? ought you not to stem? ought he not to stem? ought we not to stem? ought you not to stem? ought they not to stem?
V-ing form
ought I not to be stemming? ought you not to be stemming? ought he not to be stemming? ought we not to be stemming? ought you not to be stemming? ought they not to be stemming?
Perfect
ought I not to have stemmed? ought you not to have stemmed? ought he not to have stemmed? ought we not to have stemmed? ought you not to have stemmed? ought they not to have stemmed?
V-ing perfect
ought I not to have been stemming? ought you not to have been stemming? ought he not to have been stemming? ought we not to have been stemming? ought you not to have been stemming? ought they not to have been stemming?