I ought to prefertilize you ought to prefertilize she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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 she 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?