ought to double-bill
Verbe régulier : double-bill - double-billed- double-billed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I ought to double-bill
you ought to double-bill
he ought to double-bill
we ought to double-bill
you ought to double-bill
they ought to double-bill 	I ought to be double-billing
you ought to be double-billing
he ought to be double-billing
we ought to be double-billing
you ought to be double-billing
they ought to be double-billing	I ought to have double-billed
you ought to have double-billed
he ought to have double-billed
we ought to have double-billed
you ought to have double-billed
they ought to have double-billed	I ought to have been double-billing
you ought to have been double-billing
he ought to have been double-billing
we ought to have been double-billing
you ought to have been double-billing
they ought to have been double-billing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I oughtn't to double-bill
you oughtn't to double-bill
he oughtn't to double-bill
we oughtn't to double-bill
you oughtn't to double-bill
they oughtn't to double-bill 	I oughtn't to be double-billing
you oughtn't to be double-billing
he oughtn't to be double-billing
we oughtn't to be double-billing
you oughtn't to be double-billing
they oughtn't to be double-billing	I oughtn't to have double-billed
you oughtn't to have double-billed
he oughtn't to have double-billed
we oughtn't to have double-billed
you oughtn't to have double-billed
they oughtn't to have double-billed	I oughtn't to have been double-billing
you oughtn't to have been double-billing
he oughtn't to have been double-billing
we oughtn't to have been double-billing
you oughtn't to have been double-billing
they oughtn't to have been double-billing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
ought to I double-bill?
ought to you double-bill?
ought to he double-bill?
ought to we double-bill?
ought to you double-bill?
ought to they double-bill? 	ought to I be double-billing?
ought to you be double-billing?
ought to he be double-billing?
ought to we be double-billing?
ought to you be double-billing?
ought to they be double-billing? 	ought to I have double-billed?
ought to you have double-billed?
ought to he have double-billed?
ought to we have double-billed?
ought to you have double-billed?
ought to they have double-billed? 	ought to I have been double-billing?
ought to you have been double-billing?
ought to he have been double-billing?
ought to we have been double-billing?
ought to you have been double-billing?
ought to they have been double-billing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
oughtn't I to double-bill?
oughtn't you to double-bill?
oughtn't he to double-bill?
oughtn't we to double-bill?
oughtn't you to double-bill?
oughtn't they to double-bill? 	oughtn't I to be double-billing?
oughtn't you to be double-billing?
oughtn't he to be double-billing?
oughtn't we to be double-billing?
oughtn't you to be double-billing?
oughtn't they to be double-billing? 	oughtn't I to have double-billed?
oughtn't you to have double-billed?
oughtn't he to have double-billed?
oughtn't we to have double-billed?
oughtn't you to have double-billed?
oughtn't they to have double-billed? 	oughtn't I to have been double-billing?
oughtn't you to have been double-billing?
oughtn't he to have been double-billing?
oughtn't we to have been double-billing?
oughtn't you to have been double-billing?
oughtn't they to have been double-billing?