English verb conjugation
OUGHT TO PRESERVE

Regular verb: preserve - preserved - preserved

Affirmation

Simple form	V-ing form
I ought to preserve you ought to preserve she ought to preserve we ought to preserve you ought to preserve they ought to preserve	I ought to be preserving you ought to be preserving she ought to be preserving we ought to be preserving you ought to be preserving they ought to be preserving
Perfect	V-ing perfect
I ought to have preserved you ought to have preserved she ought to have preserved we ought to have preserved you ought to have preserved they ought to have preserved	I ought to have been preserving you ought to have been preserving she ought to have been preserving we ought to have been preserving you ought to have been preserving they ought to have been preserving

Negation

Simple form	V-ing form
I ought not to preserve you ought not to preserve she ought not to preserve we ought not to preserve you ought not to preserve they ought not to preserve	I ought not to preserving you ought not to preserving she ought not to preserving we ought not to preserving you ought not to preserving they ought not to preserving
Perfect	V-ing perfect
I ought not to have preserved you ought not to have preserved she ought not to have preserved we ought not to have preserved you ought not to have preserved they ought not to have preserved	I ought not to have been preserving you ought not to have been preserving she ought not to have been preserving we ought not to have been preserving you ought not to have been preserving they ought not to have been preserving

Interrogative form

Simple form	V-ing form
ought to I preserve? ought to you preserve? ought to she preserve? ought to we preserve? ought to you preserve? ought to they preserve?	ought to I be preserving? ought to you be preserving? ought to she be preserving? ought to we be preserving? ought to you be preserving? ought to they be preserving?
Perfect	V-ing perfect
ought to I have preserved? ought to you have preserved? ought to she have preserved? ought to we have preserved? ought to you have preserved? ought to they have preserved?	ought to I have been preserving? ought to you have been preserving? ought to she have been preserving? ought to we have been preserving? ought to you have been preserving? ought to they have been preserving?

Interro-negative form

Simple form	V-ing form
ought I not to preserve? ought you not to preserve? ought she not to preserve? ought we not to preserve? ought you not to preserve? ought they not to preserve?	ought I not to be preserving? ought you not to be preserving? ought she not to be preserving? ought we not to be preserving? ought you not to be preserving? ought they not to be preserving?
Perfect	V-ing perfect
ought I not to have preserved? ought you not to have preserved? ought she not to have preserved? ought we not to have preserved? ought you not to have preserved? ought they not to have preserved?	ought I not to have been preserving? ought you not to have been preserving? ought she not to have been preserving? ought we not to have been preserving? ought you not to have been preserving? ought they not to have been preserving?