may devitalise
Regular verb: devitalise - devitalised- devitalised

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may devitalise
you may devitalise
he may devitalise
we may devitalise
you may devitalise
they may devitalise 	I may be devitalising
you may be devitalising
he may be devitalising
we may be devitalising
you may be devitalising
they may be devitalising	I may have devitalised
you may have devitalised
he may have devitalised
we may have devitalised
you may have devitalised
they may have devitalised	I may have been devitalising
you may have been devitalising
he may have been devitalising
we may have been devitalising
you may have been devitalising
they may have been devitalising	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not devitalise
you may not devitalise
he may not devitalise
we may not devitalise
you may not devitalise
they may not devitalise 	I may not be devitalising
you may not be devitalising
he may not be devitalising
we may not be devitalising
you may not be devitalising
they may not be devitalising	I may not have devitalised
you may not have devitalised
he may not have devitalised
we may not have devitalised
you may not have devitalised
they may not have devitalised	I may not have been devitalising
you may not have been devitalising
he may not have been devitalising
we may not have been devitalising
you may not have been devitalising
they may not have been devitalising	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I devitalise?
may you devitalise?
may he devitalise?
may we devitalise?
may you devitalise?
may they devitalise? 	may I be devitalising?
may you be devitalising?
may he be devitalising?
may we be devitalising?
may you be devitalising?
may they be devitalising? 	may I have devitalised?
may you have devitalised?
may he have devitalised?
may we have devitalised?
may you have devitalised?
may they have devitalised? 	may I have been devitalising?
may you have been devitalising?
may he have been devitalising?
may we have been devitalising?
may you have been devitalising?
may they have been devitalising? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not devitalise?
may you not devitalise?
may he not devitalise?
may we not devitalise?
may you not devitalise?
may they not devitalise? 	may I not be devitalising?
may you not be devitalising?
may he not be devitalising?
may we not be devitalising?
may you not be devitalising?
may they not be devitalising? 	may I not have devitalised?
may you not have devitalised?
may he not have devitalised?
may we not have devitalised?
may you not have devitalised?
may they not have devitalised? 	may I not have been devitalising?
may you not have been devitalising?
may he not have been devitalising?
may we not have been devitalising?
may you not have been devitalising?
may they not have been devitalising?