ought to preboard
Verbo regular: preboard - preboarded- preboarded

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I ought to preboard
you ought to preboard
he 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
he 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
he 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
he ought to have been preboarding
we ought to have been preboarding
you ought to have been preboarding
they ought to have been preboarding	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I ought not to preboard
you ought not to preboard
he ought not to preboard
we ought not to preboard
you ought not to preboard
they ought not to preboard 	I ought not to preboarding
you ought not to preboarding
he ought not to preboarding
we ought not to preboarding
you ought not to preboarding
they ought not to preboarding	I ought not to have preboarded
you ought not to have preboarded
he ought not to have preboarded
we ought not to have preboarded
you ought not to have preboarded
they ought not to have preboarded	I ought not to have been preboarding
you ought not to have been preboarding
he ought not to have been preboarding
we ought not to have been preboarding
you ought not to have been preboarding
they ought not to have been preboarding	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
ought to I preboard?
ought to you preboard?
ought to he 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 he 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 he 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 he have been preboarding?
ought to we have been preboarding?
ought to you have been preboarding?
ought to they have been preboarding? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
ought I not to preboard?
ought you not to preboard?
ought he not to preboard?
ought we not to preboard?
ought you not to preboard?
ought they not to preboard? 	ought I not to be preboarding?
ought you not to be preboarding?
ought he not to be preboarding?
ought we not to be preboarding?
ought you not to be preboarding?
ought they not to be preboarding? 	ought I not to have preboarded?
ought you not to have preboarded?
ought he not to have preboarded?
ought we not to have preboarded?
ought you not to have preboarded?
ought they not to have preboarded? 	ought I not to have been preboarding?
ought you not to have been preboarding?
ought he not to have been preboarding?
ought we not to have been preboarding?
ought you not to have been preboarding?
ought they not to have been preboarding?