ought to preobtain
Verbe régulier : preobtain - preobtained- preobtained

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I ought to preobtain
you ought to preobtain
she ought to preobtain
we ought to preobtain
you ought to preobtain
they ought to preobtain 	I ought to be preobtaining
you ought to be preobtaining
she ought to be preobtaining
we ought to be preobtaining
you ought to be preobtaining
they ought to be preobtaining	I ought to have preobtained
you ought to have preobtained
she ought to have preobtained
we ought to have preobtained
you ought to have preobtained
they ought to have preobtained	I ought to have been preobtaining
you ought to have been preobtaining
she ought to have been preobtaining
we ought to have been preobtaining
you ought to have been preobtaining
they ought to have been preobtaining	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I ought not to preobtain
you ought not to preobtain
she ought not to preobtain
we ought not to preobtain
you ought not to preobtain
they ought not to preobtain 	I ought not to preobtaining
you ought not to preobtaining
she ought not to preobtaining
we ought not to preobtaining
you ought not to preobtaining
they ought not to preobtaining	I ought not to have preobtained
you ought not to have preobtained
she ought not to have preobtained
we ought not to have preobtained
you ought not to have preobtained
they ought not to have preobtained	I ought not to have been preobtaining
you ought not to have been preobtaining
she ought not to have been preobtaining
we ought not to have been preobtaining
you ought not to have been preobtaining
they ought not to have been preobtaining	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
ought to I preobtain?
ought to you preobtain?
ought to she preobtain?
ought to we preobtain?
ought to you preobtain?
ought to they preobtain? 	ought to I be preobtaining?
ought to you be preobtaining?
ought to she be preobtaining?
ought to we be preobtaining?
ought to you be preobtaining?
ought to they be preobtaining? 	ought to I have preobtained?
ought to you have preobtained?
ought to she have preobtained?
ought to we have preobtained?
ought to you have preobtained?
ought to they have preobtained? 	ought to I have been preobtaining?
ought to you have been preobtaining?
ought to she have been preobtaining?
ought to we have been preobtaining?
ought to you have been preobtaining?
ought to they have been preobtaining? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
ought I not to preobtain?
ought you not to preobtain?
ought she not to preobtain?
ought we not to preobtain?
ought you not to preobtain?
ought they not to preobtain? 	ought I not to be preobtaining?
ought you not to be preobtaining?
ought she not to be preobtaining?
ought we not to be preobtaining?
ought you not to be preobtaining?
ought they not to be preobtaining? 	ought I not to have preobtained?
ought you not to have preobtained?
ought she not to have preobtained?
ought we not to have preobtained?
ought you not to have preobtained?
ought they not to have preobtained? 	ought I not to have been preobtaining?
ought you not to have been preobtaining?
ought she not to have been preobtaining?
ought we not to have been preobtaining?
ought you not to have been preobtaining?
ought they not to have been preobtaining?