could sire
Verbe régulier : sire - sired- sired
Traduction française : engendrer 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could sire
you could sire
he could sire
we could sire
you could sire
they could sire 	I could be siring
you could be siring
he could be siring
we could be siring
you could be siring
they could be siring	I could have sired
you could have sired
he could have sired
we could have sired
you could have sired
they could have sired	I could have been siring
you could have been siring
he could have been siring
we could have been siring
you could have been siring
they could have been siring	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't sire
you couldn't sire
he couldn't sire
we couldn't sire
you couldn't sire
they couldn't sire 	I couldn't be siring
you couldn't be siring
he couldn't be siring
we couldn't be siring
you couldn't be siring
they couldn't be siring	I couldn't have sired
you couldn't have sired
he couldn't have sired
we couldn't have sired
you couldn't have sired
they couldn't have sired	I couldn't have been siring
you couldn't have been siring
he couldn't have been siring
we couldn't have been siring
you couldn't have been siring
they couldn't have been siring	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I sire?
could you sire?
could he sire?
could we sire?
could you sire?
could they sire? 	could I be siring?
could you be siring?
could he be siring?
could we be siring?
could you be siring?
could they be siring? 	could I have sired?
could you have sired?
could he have sired?
could we have sired?
could you have sired?
could they have sired? 	could I have been siring?
could you have been siring?
could he have been siring?
could we have been siring?
could you have been siring?
could they have been siring? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I sire?
couldn't you sire?
couldn't he sire?
couldn't we sire?
couldn't you sire?
couldn't they sire? 	couldn't I be siring?
couldn't you be siring?
couldn't he be siring?
couldn't we be siring?
couldn't you be siring?
couldn't they be siring? 	couldn't I have sired?
couldn't you have sired?
couldn't he have sired?
couldn't we have sired?
couldn't you have sired?
couldn't they have sired? 	couldn't I have been siring?
couldn't you have been siring?
couldn't he have been siring?
couldn't we have been siring?
couldn't you have been siring?
couldn't they have been siring?