ought to grieve
Regular verb: grieve - grieved- grieved

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to grieve
you ought to grieve
she ought to grieve
we ought to grieve
you ought to grieve
they ought to grieve 	I ought to be grieving
you ought to be grieving
she ought to be grieving
we ought to be grieving
you ought to be grieving
they ought to be grieving	I ought to have grieved
you ought to have grieved
she ought to have grieved
we ought to have grieved
you ought to have grieved
they ought to have grieved	I ought to have been grieving
you ought to have been grieving
she ought to have been grieving
we ought to have been grieving
you ought to have been grieving
they ought to have been grieving	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to grieve
you ought not to grieve
she ought not to grieve
we ought not to grieve
you ought not to grieve
they ought not to grieve 	I ought not to grieving
you ought not to grieving
she ought not to grieving
we ought not to grieving
you ought not to grieving
they ought not to grieving	I ought not to have grieved
you ought not to have grieved
she ought not to have grieved
we ought not to have grieved
you ought not to have grieved
they ought not to have grieved	I ought not to have been grieving
you ought not to have been grieving
she ought not to have been grieving
we ought not to have been grieving
you ought not to have been grieving
they ought not to have been grieving	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I grieve?
ought to you grieve?
ought to she grieve?
ought to we grieve?
ought to you grieve?
ought to they grieve? 	ought to I be grieving?
ought to you be grieving?
ought to she be grieving?
ought to we be grieving?
ought to you be grieving?
ought to they be grieving? 	ought to I have grieved?
ought to you have grieved?
ought to she have grieved?
ought to we have grieved?
ought to you have grieved?
ought to they have grieved? 	ought to I have been grieving?
ought to you have been grieving?
ought to she have been grieving?
ought to we have been grieving?
ought to you have been grieving?
ought to they have been grieving? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to grieve?
ought you not to grieve?
ought she not to grieve?
ought we not to grieve?
ought you not to grieve?
ought they not to grieve? 	ought I not to be grieving?
ought you not to be grieving?
ought she not to be grieving?
ought we not to be grieving?
ought you not to be grieving?
ought they not to be grieving? 	ought I not to have grieved?
ought you not to have grieved?
ought she not to have grieved?
ought we not to have grieved?
ought you not to have grieved?
ought they not to have grieved? 	ought I not to have been grieving?
ought you not to have been grieving?
ought she not to have been grieving?
ought we not to have been grieving?
ought you not to have been grieving?
ought they not to have been grieving?