may engrain
Regular verb: engrain - engrained- engrained

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may engrain
you may engrain
he may engrain
we may engrain
you may engrain
they may engrain 	I may be engraining
you may be engraining
he may be engraining
we may be engraining
you may be engraining
they may be engraining	I may have engrained
you may have engrained
he may have engrained
we may have engrained
you may have engrained
they may have engrained	I may have been engraining
you may have been engraining
he may have been engraining
we may have been engraining
you may have been engraining
they may have been engraining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't engrain
you mayn't engrain
he mayn't engrain
we mayn't engrain
you mayn't engrain
they mayn't engrain 	I mayn't be engraining
you mayn't be engraining
he mayn't be engraining
we mayn't be engraining
you mayn't be engraining
they mayn't be engraining	I mayn't have engrained
you mayn't have engrained
he mayn't have engrained
we mayn't have engrained
you mayn't have engrained
they mayn't have engrained	I mayn't have been engraining
you mayn't have been engraining
he mayn't have been engraining
we mayn't have been engraining
you mayn't have been engraining
they mayn't have been engraining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I engrain?
may you engrain?
may he engrain?
may we engrain?
may you engrain?
may they engrain? 	may I be engraining?
may you be engraining?
may he be engraining?
may we be engraining?
may you be engraining?
may they be engraining? 	may I have engrained?
may you have engrained?
may he have engrained?
may we have engrained?
may you have engrained?
may they have engrained? 	may I have been engraining?
may you have been engraining?
may he have been engraining?
may we have been engraining?
may you have been engraining?
may they have been engraining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I engrain?
mayn't you engrain?
mayn't he engrain?
mayn't we engrain?
mayn't you engrain?
mayn't they engrain? 	mayn't I be engraining?
mayn't you be engraining?
mayn't he be engraining?
mayn't we be engraining?
mayn't you be engraining?
mayn't they be engraining? 	mayn't I have engrained?
mayn't you have engrained?
mayn't he have engrained?
mayn't we have engrained?
mayn't you have engrained?
mayn't they have engrained? 	mayn't I have been engraining?
mayn't you have been engraining?
mayn't he have been engraining?
mayn't we have been engraining?
mayn't you have been engraining?
mayn't they have been engraining?