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
she could pretreat
we could pretreat
you could pretreat
they could pretreat 	I could be pretreating
you could be pretreating
she could be pretreating
we could be pretreating
you could be pretreating
they could be pretreating	I could have pretreated
you could have pretreated
she 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
she 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 could not pretreat
you could not pretreat
she could not pretreat
we could not pretreat
you could not pretreat
they could not pretreat 	I could not be pretreating
you could not be pretreating
she could not be pretreating
we could not be pretreating
you could not be pretreating
they could not be pretreating	I could not have pretreated
you could not have pretreated
she could not have pretreated
we could not have pretreated
you could not have pretreated
they could not have pretreated	I could not have been pretreating
you could not have been pretreating
she could not have been pretreating
we could not have been pretreating
you could not have been pretreating
they could not have been pretreating	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I pretreat?
could you pretreat?
could she pretreat?
could we pretreat?
could you pretreat?
could they pretreat? 	could I be pretreating?
could you be pretreating?
could she be pretreating?
could we be pretreating?
could you be pretreating?
could they be pretreating? 	could I have pretreated?
could you have pretreated?
could she 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 she 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 	
could I not pretreat?
could you not pretreat?
could she not pretreat?
could we not pretreat?
could you not pretreat?
could they not pretreat? 	could I not be pretreating?
could you not be pretreating?
could she not be pretreating?
could we not be pretreating?
could you not be pretreating?
could they not be pretreating? 	could I not have pretreated?
could you not have pretreated?
could she not have pretreated?
could we not have pretreated?
could you not have pretreated?
could they not have pretreated? 	could I not have been pretreating?
could you not have been pretreating?
could she not have been pretreating?
could we not have been pretreating?
could you not have been pretreating?
could they not have been pretreating?