could pretreat
Verbe régulier : pretreat - pretreated- pretreated

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could pretreat
you could pretreat
he could pretreat
we could pretreat
you could pretreat
they could pretreat 	I could be pretreating
you could be pretreating
he could be pretreating
we could be pretreating
you could be pretreating
they could be pretreating	I could have pretreated
you could have pretreated
he could have pretreated
we could have pretreated
you could have pretreated
they could have pretreated	I could have been pretreating
you could have been pretreating
he could have been pretreating
we could have been pretreating
you could have been pretreating
they could have been pretreating	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I couldn't pretreat
you couldn't pretreat
he couldn't pretreat
we couldn't pretreat
you couldn't pretreat
they couldn't pretreat 	I couldn't be pretreating
you couldn't be pretreating
he couldn't be pretreating
we couldn't be pretreating
you couldn't be pretreating
they couldn't be pretreating	I couldn't have pretreated
you couldn't have pretreated
he couldn't have pretreated
we couldn't have pretreated
you couldn't have pretreated
they couldn't have pretreated	I couldn't have been pretreating
you couldn't have been pretreating
he couldn't have been pretreating
we couldn't have been pretreating
you couldn't have been pretreating
they couldn't have been pretreating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I pretreat?
could you pretreat?
could he pretreat?
could we pretreat?
could you pretreat?
could they pretreat? 	could I be pretreating?
could you be pretreating?
could he be pretreating?
could we be pretreating?
could you be pretreating?
could they be pretreating? 	could I have pretreated?
could you have pretreated?
could he have pretreated?
could we have pretreated?
could you have pretreated?
could they have pretreated? 	could I have been pretreating?
could you have been pretreating?
could he have been pretreating?
could we have been pretreating?
could you have been pretreating?
could they have been pretreating? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
couldn't I pretreat?
couldn't you pretreat?
couldn't he pretreat?
couldn't we pretreat?
couldn't you pretreat?
couldn't they pretreat? 	couldn't I be pretreating?
couldn't you be pretreating?
couldn't he be pretreating?
couldn't we be pretreating?
couldn't you be pretreating?
couldn't they be pretreating? 	couldn't I have pretreated?
couldn't you have pretreated?
couldn't he have pretreated?
couldn't we have pretreated?
couldn't you have pretreated?
couldn't they have pretreated? 	couldn't I have been pretreating?
couldn't you have been pretreating?
couldn't he have been pretreating?
couldn't we have been pretreating?
couldn't you have been pretreating?
couldn't they have been pretreating?