ought to unbuckle
Regular verb: unbuckle - unbuckled- unbuckled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to unbuckle
you ought to unbuckle
he ought to unbuckle
we ought to unbuckle
you ought to unbuckle
they ought to unbuckle 	I ought to be unbuckling
you ought to be unbuckling
he ought to be unbuckling
we ought to be unbuckling
you ought to be unbuckling
they ought to be unbuckling	I ought to have unbuckled
you ought to have unbuckled
he ought to have unbuckled
we ought to have unbuckled
you ought to have unbuckled
they ought to have unbuckled	I ought to have been unbuckling
you ought to have been unbuckling
he ought to have been unbuckling
we ought to have been unbuckling
you ought to have been unbuckling
they ought to have been unbuckling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to unbuckle
you oughtn't to unbuckle
he oughtn't to unbuckle
we oughtn't to unbuckle
you oughtn't to unbuckle
they oughtn't to unbuckle 	I oughtn't to be unbuckling
you oughtn't to be unbuckling
he oughtn't to be unbuckling
we oughtn't to be unbuckling
you oughtn't to be unbuckling
they oughtn't to be unbuckling	I oughtn't to have unbuckled
you oughtn't to have unbuckled
he oughtn't to have unbuckled
we oughtn't to have unbuckled
you oughtn't to have unbuckled
they oughtn't to have unbuckled	I oughtn't to have been unbuckling
you oughtn't to have been unbuckling
he oughtn't to have been unbuckling
we oughtn't to have been unbuckling
you oughtn't to have been unbuckling
they oughtn't to have been unbuckling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I unbuckle?
ought to you unbuckle?
ought to he unbuckle?
ought to we unbuckle?
ought to you unbuckle?
ought to they unbuckle? 	ought to I be unbuckling?
ought to you be unbuckling?
ought to he be unbuckling?
ought to we be unbuckling?
ought to you be unbuckling?
ought to they be unbuckling? 	ought to I have unbuckled?
ought to you have unbuckled?
ought to he have unbuckled?
ought to we have unbuckled?
ought to you have unbuckled?
ought to they have unbuckled? 	ought to I have been unbuckling?
ought to you have been unbuckling?
ought to he have been unbuckling?
ought to we have been unbuckling?
ought to you have been unbuckling?
ought to they have been unbuckling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to unbuckle?
oughtn't you to unbuckle?
oughtn't he to unbuckle?
oughtn't we to unbuckle?
oughtn't you to unbuckle?
oughtn't they to unbuckle? 	oughtn't I to be unbuckling?
oughtn't you to be unbuckling?
oughtn't he to be unbuckling?
oughtn't we to be unbuckling?
oughtn't you to be unbuckling?
oughtn't they to be unbuckling? 	oughtn't I to have unbuckled?
oughtn't you to have unbuckled?
oughtn't he to have unbuckled?
oughtn't we to have unbuckled?
oughtn't you to have unbuckled?
oughtn't they to have unbuckled? 	oughtn't I to have been unbuckling?
oughtn't you to have been unbuckling?
oughtn't he to have been unbuckling?
oughtn't we to have been unbuckling?
oughtn't you to have been unbuckling?
oughtn't they to have been unbuckling?