ought to buckle
Regular verb: buckle - buckled- buckled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to buckle
you ought to buckle
he ought to buckle
we ought to buckle
you ought to buckle
they ought to buckle 	I ought to be buckling
you ought to be buckling
he ought to be buckling
we ought to be buckling
you ought to be buckling
they ought to be buckling	I ought to have buckled
you ought to have buckled
he ought to have buckled
we ought to have buckled
you ought to have buckled
they ought to have buckled	I ought to have been buckling
you ought to have been buckling
he ought to have been buckling
we ought to have been buckling
you ought to have been buckling
they ought to have been buckling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought not to buckle
you ought not to buckle
he ought not to buckle
we ought not to buckle
you ought not to buckle
they ought not to buckle 	I ought not to buckling
you ought not to buckling
he ought not to buckling
we ought not to buckling
you ought not to buckling
they ought not to buckling	I ought not to have buckled
you ought not to have buckled
he ought not to have buckled
we ought not to have buckled
you ought not to have buckled
they ought not to have buckled	I ought not to have been buckling
you ought not to have been buckling
he ought not to have been buckling
we ought not to have been buckling
you ought not to have been buckling
they ought not to have been buckling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I buckle?
ought to you buckle?
ought to he buckle?
ought to we buckle?
ought to you buckle?
ought to they buckle? 	ought to I be buckling?
ought to you be buckling?
ought to he be buckling?
ought to we be buckling?
ought to you be buckling?
ought to they be buckling? 	ought to I have buckled?
ought to you have buckled?
ought to he have buckled?
ought to we have buckled?
ought to you have buckled?
ought to they have buckled? 	ought to I have been buckling?
ought to you have been buckling?
ought to he have been buckling?
ought to we have been buckling?
ought to you have been buckling?
ought to they have been buckling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought I not to buckle?
ought you not to buckle?
ought he not to buckle?
ought we not to buckle?
ought you not to buckle?
ought they not to buckle? 	ought I not to be buckling?
ought you not to be buckling?
ought he not to be buckling?
ought we not to be buckling?
ought you not to be buckling?
ought they not to be buckling? 	ought I not to have buckled?
ought you not to have buckled?
ought he not to have buckled?
ought we not to have buckled?
ought you not to have buckled?
ought they not to have buckled? 	ought I not to have been buckling?
ought you not to have been buckling?
ought he not to have been buckling?
ought we not to have been buckling?
ought you not to have been buckling?
ought they not to have been buckling?