could upright
Verbe régulier : upright - uprighted- uprighted

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could upright
you could upright
he could upright
we could upright
you could upright
they could upright 	I could be uprighting
you could be uprighting
he could be uprighting
we could be uprighting
you could be uprighting
they could be uprighting	I could have uprighted
you could have uprighted
he could have uprighted
we could have uprighted
you could have uprighted
they could have uprighted	I could have been uprighting
you could have been uprighting
he could have been uprighting
we could have been uprighting
you could have been uprighting
they could have been uprighting	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't upright
you couldn't upright
he couldn't upright
we couldn't upright
you couldn't upright
they couldn't upright 	I couldn't be uprighting
you couldn't be uprighting
he couldn't be uprighting
we couldn't be uprighting
you couldn't be uprighting
they couldn't be uprighting	I couldn't have uprighted
you couldn't have uprighted
he couldn't have uprighted
we couldn't have uprighted
you couldn't have uprighted
they couldn't have uprighted	I couldn't have been uprighting
you couldn't have been uprighting
he couldn't have been uprighting
we couldn't have been uprighting
you couldn't have been uprighting
they couldn't have been uprighting	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I upright?
could you upright?
could he upright?
could we upright?
could you upright?
could they upright? 	could I be uprighting?
could you be uprighting?
could he be uprighting?
could we be uprighting?
could you be uprighting?
could they be uprighting? 	could I have uprighted?
could you have uprighted?
could he have uprighted?
could we have uprighted?
could you have uprighted?
could they have uprighted? 	could I have been uprighting?
could you have been uprighting?
could he have been uprighting?
could we have been uprighting?
could you have been uprighting?
could they have been uprighting? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I upright?
couldn't you upright?
couldn't he upright?
couldn't we upright?
couldn't you upright?
couldn't they upright? 	couldn't I be uprighting?
couldn't you be uprighting?
couldn't he be uprighting?
couldn't we be uprighting?
couldn't you be uprighting?
couldn't they be uprighting? 	couldn't I have uprighted?
couldn't you have uprighted?
couldn't he have uprighted?
couldn't we have uprighted?
couldn't you have uprighted?
couldn't they have uprighted? 	couldn't I have been uprighting?
couldn't you have been uprighting?
couldn't he have been uprighting?
couldn't we have been uprighting?
couldn't you have been uprighting?
couldn't they have been uprighting?