may purify
Regular verb: purify - purified- purified

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may purify
you may purify
he may purify
we may purify
you may purify
they may purify 	I may be purifying
you may be purifying
he may be purifying
we may be purifying
you may be purifying
they may be purifying	I may have purified
you may have purified
he may have purified
we may have purified
you may have purified
they may have purified	I may have been purifying
you may have been purifying
he may have been purifying
we may have been purifying
you may have been purifying
they may have been purifying	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not purify
you may not purify
he may not purify
we may not purify
you may not purify
they may not purify 	I may not be purifying
you may not be purifying
he may not be purifying
we may not be purifying
you may not be purifying
they may not be purifying	I may not have purified
you may not have purified
he may not have purified
we may not have purified
you may not have purified
they may not have purified	I may not have been purifying
you may not have been purifying
he may not have been purifying
we may not have been purifying
you may not have been purifying
they may not have been purifying	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I purify?
may you purify?
may he purify?
may we purify?
may you purify?
may they purify? 	may I be purifying?
may you be purifying?
may he be purifying?
may we be purifying?
may you be purifying?
may they be purifying? 	may I have purified?
may you have purified?
may he have purified?
may we have purified?
may you have purified?
may they have purified? 	may I have been purifying?
may you have been purifying?
may he have been purifying?
may we have been purifying?
may you have been purifying?
may they have been purifying? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not purify?
may you not purify?
may he not purify?
may we not purify?
may you not purify?
may they not purify? 	may I not be purifying?
may you not be purifying?
may he not be purifying?
may we not be purifying?
may you not be purifying?
may they not be purifying? 	may I not have purified?
may you not have purified?
may he not have purified?
may we not have purified?
may you not have purified?
may they not have purified? 	may I not have been purifying?
may you not have been purifying?
may he not have been purifying?
may we not have been purifying?
may you not have been purifying?
may they not have been purifying?