could purify
Verbe régulier : purify - purified- purified
Traduction française : épurer - purifier 

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could purify
you could purify
she could purify
we could purify
you could purify
they could purify 	I could be purifying
you could be purifying
she could be purifying
we could be purifying
you could be purifying
they could be purifying	I could have purified
you could have purified
she could have purified
we could have purified
you could have purified
they could have purified	I could have been purifying
you could have been purifying
she could have been purifying
we could have been purifying
you could have been purifying
they could have been purifying	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I could not purify
you could not purify
she could not purify
we could not purify
you could not purify
they could not purify 	I could not be purifying
you could not be purifying
she could not be purifying
we could not be purifying
you could not be purifying
they could not be purifying	I could not have purified
you could not have purified
she could not have purified
we could not have purified
you could not have purified
they could not have purified	I could not have been purifying
you could not have been purifying
she could not have been purifying
we could not have been purifying
you could not have been purifying
they could not have been purifying	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I purify?
could you purify?
could she purify?
could we purify?
could you purify?
could they purify? 	could I be purifying?
could you be purifying?
could she be purifying?
could we be purifying?
could you be purifying?
could they be purifying? 	could I have purified?
could you have purified?
could she have purified?
could we have purified?
could you have purified?
could they have purified? 	could I have been purifying?
could you have been purifying?
could she have been purifying?
could we have been purifying?
could you have been purifying?
could they have been purifying? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
could I not purify?
could you not purify?
could she not purify?
could we not purify?
could you not purify?
could they not purify? 	could I not be purifying?
could you not be purifying?
could she not be purifying?
could we not be purifying?
could you not be purifying?
could they not be purifying? 	could I not have purified?
could you not have purified?
could she not have purified?
could we not have purified?
could you not have purified?
could they not have purified? 	could I not have been purifying?
could you not have been purifying?
could she not have been purifying?
could we not have been purifying?
could you not have been purifying?
could they not have been purifying?