I ought to prefertilize you ought to prefertilize he ought to prefertilize we ought to prefertilize you ought to prefertilize they ought to prefertilize
V-ing form
I ought to be prefertilizing you ought to be prefertilizing he ought to be prefertilizing we ought to be prefertilizing you ought to be prefertilizing they ought to be prefertilizing
Perfect
I ought to have prefertilized you ought to have prefertilized he ought to have prefertilized we ought to have prefertilized you ought to have prefertilized they ought to have prefertilized
V-ing perfect
I ought to have been prefertilizing you ought to have been prefertilizing he ought to have been prefertilizing we ought to have been prefertilizing you ought to have been prefertilizing they ought to have been prefertilizing
Negation
Simple form
I ought not to prefertilize you ought not to prefertilize he ought not to prefertilize we ought not to prefertilize you ought not to prefertilize they ought not to prefertilize
V-ing form
I ought not to prefertilizing you ought not to prefertilizing he ought not to prefertilizing we ought not to prefertilizing you ought not to prefertilizing they ought not to prefertilizing
Perfect
I ought not to have prefertilized you ought not to have prefertilized he ought not to have prefertilized we ought not to have prefertilized you ought not to have prefertilized they ought not to have prefertilized
V-ing perfect
I ought not to have been prefertilizing you ought not to have been prefertilizing he ought not to have been prefertilizing we ought not to have been prefertilizing you ought not to have been prefertilizing they ought not to have been prefertilizing
Interrogative form
Simple form
ought to I prefertilize? ought to you prefertilize? ought to he prefertilize? ought to we prefertilize? ought to you prefertilize? ought to they prefertilize?
V-ing form
ought to I be prefertilizing? ought to you be prefertilizing? ought to he be prefertilizing? ought to we be prefertilizing? ought to you be prefertilizing? ought to they be prefertilizing?
Perfect
ought to I have prefertilized? ought to you have prefertilized? ought to he have prefertilized? ought to we have prefertilized? ought to you have prefertilized? ought to they have prefertilized?
V-ing perfect
ought to I have been prefertilizing? ought to you have been prefertilizing? ought to he have been prefertilizing? ought to we have been prefertilizing? ought to you have been prefertilizing? ought to they have been prefertilizing?
Interro-negative form
Simple form
ought I not to prefertilize? ought you not to prefertilize? ought he not to prefertilize? ought we not to prefertilize? ought you not to prefertilize? ought they not to prefertilize?
V-ing form
ought I not to be prefertilizing? ought you not to be prefertilizing? ought he not to be prefertilizing? ought we not to be prefertilizing? ought you not to be prefertilizing? ought they not to be prefertilizing?
Perfect
ought I not to have prefertilized? ought you not to have prefertilized? ought he not to have prefertilized? ought we not to have prefertilized? ought you not to have prefertilized? ought they not to have prefertilized?
V-ing perfect
ought I not to have been prefertilizing? ought you not to have been prefertilizing? ought he not to have been prefertilizing? ought we not to have been prefertilizing? ought you not to have been prefertilizing? ought they not to have been prefertilizing?