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

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

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mustn't purify
you mustn't purify
she mustn't purify
we mustn't purify
you mustn't purify
they mustn't purify 	I mustn't be purifying
you mustn't be purifying
she mustn't be purifying
we mustn't be purifying
you mustn't be purifying
they mustn't be purifying	I mustn't have purified
you mustn't have purified
she mustn't have purified
we mustn't have purified
you mustn't have purified
they mustn't have purified	I mustn't have been purifying
you mustn't have been purifying
she mustn't have been purifying
we mustn't have been purifying
you mustn't have been purifying
they mustn't have been purifying	

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

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