ought to predrill
Regular verb: predrill - predrilled- predrilled

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I ought to predrill
you ought to predrill
he ought to predrill
we ought to predrill
you ought to predrill
they ought to predrill 	I ought to be predrilling
you ought to be predrilling
he ought to be predrilling
we ought to be predrilling
you ought to be predrilling
they ought to be predrilling	I ought to have predrilled
you ought to have predrilled
he ought to have predrilled
we ought to have predrilled
you ought to have predrilled
they ought to have predrilled	I ought to have been predrilling
you ought to have been predrilling
he ought to have been predrilling
we ought to have been predrilling
you ought to have been predrilling
they ought to have been predrilling	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I oughtn't to predrill
you oughtn't to predrill
he oughtn't to predrill
we oughtn't to predrill
you oughtn't to predrill
they oughtn't to predrill 	I oughtn't to be predrilling
you oughtn't to be predrilling
he oughtn't to be predrilling
we oughtn't to be predrilling
you oughtn't to be predrilling
they oughtn't to be predrilling	I oughtn't to have predrilled
you oughtn't to have predrilled
he oughtn't to have predrilled
we oughtn't to have predrilled
you oughtn't to have predrilled
they oughtn't to have predrilled	I oughtn't to have been predrilling
you oughtn't to have been predrilling
he oughtn't to have been predrilling
we oughtn't to have been predrilling
you oughtn't to have been predrilling
they oughtn't to have been predrilling	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
ought to I predrill?
ought to you predrill?
ought to he predrill?
ought to we predrill?
ought to you predrill?
ought to they predrill? 	ought to I be predrilling?
ought to you be predrilling?
ought to he be predrilling?
ought to we be predrilling?
ought to you be predrilling?
ought to they be predrilling? 	ought to I have predrilled?
ought to you have predrilled?
ought to he have predrilled?
ought to we have predrilled?
ought to you have predrilled?
ought to they have predrilled? 	ought to I have been predrilling?
ought to you have been predrilling?
ought to he have been predrilling?
ought to we have been predrilling?
ought to you have been predrilling?
ought to they have been predrilling? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
oughtn't I to predrill?
oughtn't you to predrill?
oughtn't he to predrill?
oughtn't we to predrill?
oughtn't you to predrill?
oughtn't they to predrill? 	oughtn't I to be predrilling?
oughtn't you to be predrilling?
oughtn't he to be predrilling?
oughtn't we to be predrilling?
oughtn't you to be predrilling?
oughtn't they to be predrilling? 	oughtn't I to have predrilled?
oughtn't you to have predrilled?
oughtn't he to have predrilled?
oughtn't we to have predrilled?
oughtn't you to have predrilled?
oughtn't they to have predrilled? 	oughtn't I to have been predrilling?
oughtn't you to have been predrilling?
oughtn't he to have been predrilling?
oughtn't we to have been predrilling?
oughtn't you to have been predrilling?
oughtn't they to have been predrilling?