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
he 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
he 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
he 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
he 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
he 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
he 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
he 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
he 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 he 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 he 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 he 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 he 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 he 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 he 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 he 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 he 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?