may retrain
Regular verb: retrain - retrained- retrained

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may retrain
you may retrain
he may retrain
we may retrain
you may retrain
they may retrain 	I may be retraining
you may be retraining
he may be retraining
we may be retraining
you may be retraining
they may be retraining	I may have retrained
you may have retrained
he may have retrained
we may have retrained
you may have retrained
they may have retrained	I may have been retraining
you may have been retraining
he may have been retraining
we may have been retraining
you may have been retraining
they may have been retraining	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may not retrain
you may not retrain
he may not retrain
we may not retrain
you may not retrain
they may not retrain 	I may not be retraining
you may not be retraining
he may not be retraining
we may not be retraining
you may not be retraining
they may not be retraining	I may not have retrained
you may not have retrained
he may not have retrained
we may not have retrained
you may not have retrained
they may not have retrained	I may not have been retraining
you may not have been retraining
he may not have been retraining
we may not have been retraining
you may not have been retraining
they may not have been retraining	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I retrain?
may you retrain?
may he retrain?
may we retrain?
may you retrain?
may they retrain? 	may I be retraining?
may you be retraining?
may he be retraining?
may we be retraining?
may you be retraining?
may they be retraining? 	may I have retrained?
may you have retrained?
may he have retrained?
may we have retrained?
may you have retrained?
may they have retrained? 	may I have been retraining?
may you have been retraining?
may he have been retraining?
may we have been retraining?
may you have been retraining?
may they have been retraining? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not retrain?
may you not retrain?
may he not retrain?
may we not retrain?
may you not retrain?
may they not retrain? 	may I not be retraining?
may you not be retraining?
may he not be retraining?
may we not be retraining?
may you not be retraining?
may they not be retraining? 	may I not have retrained?
may you not have retrained?
may he not have retrained?
may we not have retrained?
may you not have retrained?
may they not have retrained? 	may I not have been retraining?
may you not have been retraining?
may he not have been retraining?
may we not have been retraining?
may you not have been retraining?
may they not have been retraining?