could tier tier tier tier
Verbe régulier : tier tier tier tier - tier tier tier tiered- tier tier tier tiered

, ce verbe peut ne pas exister, la conjugaison est donnée à titre d'exemple.

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could tier tier tier tier
you could tier tier tier tier
he could tier tier tier tier
we could tier tier tier tier
you could tier tier tier tier
they could tier tier tier tier 	I could be tier tier tier tiering
you could be tier tier tier tiering
he could be tier tier tier tiering
we could be tier tier tier tiering
you could be tier tier tier tiering
they could be tier tier tier tiering	I could have tier tier tier tiered
you could have tier tier tier tiered
he could have tier tier tier tiered
we could have tier tier tier tiered
you could have tier tier tier tiered
they could have tier tier tier tiered	I could have been tier tier tier tiering
you could have been tier tier tier tiering
he could have been tier tier tier tiering
we could have been tier tier tier tiering
you could have been tier tier tier tiering
they could have been tier tier tier tiering	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't tier tier tier tier
you couldn't tier tier tier tier
he couldn't tier tier tier tier
we couldn't tier tier tier tier
you couldn't tier tier tier tier
they couldn't tier tier tier tier 	I couldn't be tier tier tier tiering
you couldn't be tier tier tier tiering
he couldn't be tier tier tier tiering
we couldn't be tier tier tier tiering
you couldn't be tier tier tier tiering
they couldn't be tier tier tier tiering	I couldn't have tier tier tier tiered
you couldn't have tier tier tier tiered
he couldn't have tier tier tier tiered
we couldn't have tier tier tier tiered
you couldn't have tier tier tier tiered
they couldn't have tier tier tier tiered	I couldn't have been tier tier tier tiering
you couldn't have been tier tier tier tiering
he couldn't have been tier tier tier tiering
we couldn't have been tier tier tier tiering
you couldn't have been tier tier tier tiering
they couldn't have been tier tier tier tiering	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I tier tier tier tier?
could you tier tier tier tier?
could he tier tier tier tier?
could we tier tier tier tier?
could you tier tier tier tier?
could they tier tier tier tier? 	could I be tier tier tier tiering?
could you be tier tier tier tiering?
could he be tier tier tier tiering?
could we be tier tier tier tiering?
could you be tier tier tier tiering?
could they be tier tier tier tiering? 	could I have tier tier tier tiered?
could you have tier tier tier tiered?
could he have tier tier tier tiered?
could we have tier tier tier tiered?
could you have tier tier tier tiered?
could they have tier tier tier tiered? 	could I have been tier tier tier tiering?
could you have been tier tier tier tiering?
could he have been tier tier tier tiering?
could we have been tier tier tier tiering?
could you have been tier tier tier tiering?
could they have been tier tier tier tiering? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I tier tier tier tier?
couldn't you tier tier tier tier?
couldn't he tier tier tier tier?
couldn't we tier tier tier tier?
couldn't you tier tier tier tier?
couldn't they tier tier tier tier? 	couldn't I be tier tier tier tiering?
couldn't you be tier tier tier tiering?
couldn't he be tier tier tier tiering?
couldn't we be tier tier tier tiering?
couldn't you be tier tier tier tiering?
couldn't they be tier tier tier tiering? 	couldn't I have tier tier tier tiered?
couldn't you have tier tier tier tiered?
couldn't he have tier tier tier tiered?
couldn't we have tier tier tier tiered?
couldn't you have tier tier tier tiered?
couldn't they have tier tier tier tiered? 	couldn't I have been tier tier tier tiering?
couldn't you have been tier tier tier tiering?
couldn't he have been tier tier tier tiering?
couldn't we have been tier tier tier tiering?
couldn't you have been tier tier tier tiering?
couldn't they have been tier tier tier tiering?