ought to grab
Regular verb: grab - grabbed- grabbed

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to grab
you ought to grab
he ought to grab
we ought to grab
you ought to grab
they ought to grab 	I ought to be grabbing
you ought to be grabbing
he ought to be grabbing
we ought to be grabbing
you ought to be grabbing
they ought to be grabbing	I ought to have grabbed
you ought to have grabbed
he ought to have grabbed
we ought to have grabbed
you ought to have grabbed
they ought to have grabbed	I ought to have been grabbing
you ought to have been grabbing
he ought to have been grabbing
we ought to have been grabbing
you ought to have been grabbing
they ought to have been grabbing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to grab
you ought not to grab
he ought not to grab
we ought not to grab
you ought not to grab
they ought not to grab 	I ought not to grabbing
you ought not to grabbing
he ought not to grabbing
we ought not to grabbing
you ought not to grabbing
they ought not to grabbing	I ought not to have grabbed
you ought not to have grabbed
he ought not to have grabbed
we ought not to have grabbed
you ought not to have grabbed
they ought not to have grabbed	I ought not to have been grabbing
you ought not to have been grabbing
he ought not to have been grabbing
we ought not to have been grabbing
you ought not to have been grabbing
they ought not to have been grabbing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I grab?
ought to you grab?
ought to he grab?
ought to we grab?
ought to you grab?
ought to they grab? 	ought to I be grabbing?
ought to you be grabbing?
ought to he be grabbing?
ought to we be grabbing?
ought to you be grabbing?
ought to they be grabbing? 	ought to I have grabbed?
ought to you have grabbed?
ought to he have grabbed?
ought to we have grabbed?
ought to you have grabbed?
ought to they have grabbed? 	ought to I have been grabbing?
ought to you have been grabbing?
ought to he have been grabbing?
ought to we have been grabbing?
ought to you have been grabbing?
ought to they have been grabbing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to grab?
ought you not to grab?
ought he not to grab?
ought we not to grab?
ought you not to grab?
ought they not to grab? 	ought I not to be grabbing?
ought you not to be grabbing?
ought he not to be grabbing?
ought we not to be grabbing?
ought you not to be grabbing?
ought they not to be grabbing? 	ought I not to have grabbed?
ought you not to have grabbed?
ought he not to have grabbed?
ought we not to have grabbed?
ought you not to have grabbed?
ought they not to have grabbed? 	ought I not to have been grabbing?
ought you not to have been grabbing?
ought he not to have been grabbing?
ought we not to have been grabbing?
ought you not to have been grabbing?
ought they not to have been grabbing?