ought to grabble
Regular verb: grabble - grabbled- grabbled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to grabble
you ought to grabble
he ought to grabble
we ought to grabble
you ought to grabble
they ought to grabble 	I ought to be grabbling
you ought to be grabbling
he ought to be grabbling
we ought to be grabbling
you ought to be grabbling
they ought to be grabbling	I ought to have grabbled
you ought to have grabbled
he ought to have grabbled
we ought to have grabbled
you ought to have grabbled
they ought to have grabbled	I ought to have been grabbling
you ought to have been grabbling
he ought to have been grabbling
we ought to have been grabbling
you ought to have been grabbling
they ought to have been grabbling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to grabble
you oughtn't to grabble
he oughtn't to grabble
we oughtn't to grabble
you oughtn't to grabble
they oughtn't to grabble 	I oughtn't to be grabbling
you oughtn't to be grabbling
he oughtn't to be grabbling
we oughtn't to be grabbling
you oughtn't to be grabbling
they oughtn't to be grabbling	I oughtn't to have grabbled
you oughtn't to have grabbled
he oughtn't to have grabbled
we oughtn't to have grabbled
you oughtn't to have grabbled
they oughtn't to have grabbled	I oughtn't to have been grabbling
you oughtn't to have been grabbling
he oughtn't to have been grabbling
we oughtn't to have been grabbling
you oughtn't to have been grabbling
they oughtn't to have been grabbling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I grabble?
ought to you grabble?
ought to he grabble?
ought to we grabble?
ought to you grabble?
ought to they grabble? 	ought to I be grabbling?
ought to you be grabbling?
ought to he be grabbling?
ought to we be grabbling?
ought to you be grabbling?
ought to they be grabbling? 	ought to I have grabbled?
ought to you have grabbled?
ought to he have grabbled?
ought to we have grabbled?
ought to you have grabbled?
ought to they have grabbled? 	ought to I have been grabbling?
ought to you have been grabbling?
ought to he have been grabbling?
ought to we have been grabbling?
ought to you have been grabbling?
ought to they have been grabbling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to grabble?
oughtn't you to grabble?
oughtn't he to grabble?
oughtn't we to grabble?
oughtn't you to grabble?
oughtn't they to grabble? 	oughtn't I to be grabbling?
oughtn't you to be grabbling?
oughtn't he to be grabbling?
oughtn't we to be grabbling?
oughtn't you to be grabbling?
oughtn't they to be grabbling? 	oughtn't I to have grabbled?
oughtn't you to have grabbled?
oughtn't he to have grabbled?
oughtn't we to have grabbled?
oughtn't you to have grabbled?
oughtn't they to have grabbled? 	oughtn't I to have been grabbling?
oughtn't you to have been grabbling?
oughtn't he to have been grabbling?
oughtn't we to have been grabbling?
oughtn't you to have been grabbling?
oughtn't they to have been grabbling?