ought to preboard
Verbe régulier : preboard - preboarded- preboarded

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I ought to preboard
you ought to preboard
she ought to preboard
we ought to preboard
you ought to preboard
they ought to preboard 	I ought to be preboarding
you ought to be preboarding
she ought to be preboarding
we ought to be preboarding
you ought to be preboarding
they ought to be preboarding	I ought to have preboarded
you ought to have preboarded
she ought to have preboarded
we ought to have preboarded
you ought to have preboarded
they ought to have preboarded	I ought to have been preboarding
you ought to have been preboarding
she ought to have been preboarding
we ought to have been preboarding
you ought to have been preboarding
they ought to have been preboarding	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I oughtn't to preboard
you oughtn't to preboard
she oughtn't to preboard
we oughtn't to preboard
you oughtn't to preboard
they oughtn't to preboard 	I oughtn't to be preboarding
you oughtn't to be preboarding
she oughtn't to be preboarding
we oughtn't to be preboarding
you oughtn't to be preboarding
they oughtn't to be preboarding	I oughtn't to have preboarded
you oughtn't to have preboarded
she oughtn't to have preboarded
we oughtn't to have preboarded
you oughtn't to have preboarded
they oughtn't to have preboarded	I oughtn't to have been preboarding
you oughtn't to have been preboarding
she oughtn't to have been preboarding
we oughtn't to have been preboarding
you oughtn't to have been preboarding
they oughtn't to have been preboarding	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
ought to I preboard?
ought to you preboard?
ought to she preboard?
ought to we preboard?
ought to you preboard?
ought to they preboard? 	ought to I be preboarding?
ought to you be preboarding?
ought to she be preboarding?
ought to we be preboarding?
ought to you be preboarding?
ought to they be preboarding? 	ought to I have preboarded?
ought to you have preboarded?
ought to she have preboarded?
ought to we have preboarded?
ought to you have preboarded?
ought to they have preboarded? 	ought to I have been preboarding?
ought to you have been preboarding?
ought to she have been preboarding?
ought to we have been preboarding?
ought to you have been preboarding?
ought to they have been preboarding? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
oughtn't I to preboard?
oughtn't you to preboard?
oughtn't she to preboard?
oughtn't we to preboard?
oughtn't you to preboard?
oughtn't they to preboard? 	oughtn't I to be preboarding?
oughtn't you to be preboarding?
oughtn't she to be preboarding?
oughtn't we to be preboarding?
oughtn't you to be preboarding?
oughtn't they to be preboarding? 	oughtn't I to have preboarded?
oughtn't you to have preboarded?
oughtn't she to have preboarded?
oughtn't we to have preboarded?
oughtn't you to have preboarded?
oughtn't they to have preboarded? 	oughtn't I to have been preboarding?
oughtn't you to have been preboarding?
oughtn't she to have been preboarding?
oughtn't we to have been preboarding?
oughtn't you to have been preboarding?
oughtn't they to have been preboarding?