may derail
Verbe régulier : derail - derailed- derailed

Affirmation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I may derail
you may derail
he may derail
we may derail
you may derail
they may derail 	I may be derailing
you may be derailing
he may be derailing
we may be derailing
you may be derailing
they may be derailing	I may have derailed
you may have derailed
he may have derailed
we may have derailed
you may have derailed
they may have derailed	I may have been derailing
you may have been derailing
he may have been derailing
we may have been derailing
you may have been derailing
they may have been derailing	

Négation 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
I mayn't derail
you mayn't derail
he mayn't derail
we mayn't derail
you mayn't derail
they mayn't derail 	I mayn't be derailing
you mayn't be derailing
he mayn't be derailing
we mayn't be derailing
you mayn't be derailing
they mayn't be derailing	I mayn't have derailed
you mayn't have derailed
he mayn't have derailed
we mayn't have derailed
you mayn't have derailed
they mayn't have derailed	I mayn't have been derailing
you mayn't have been derailing
he mayn't have been derailing
we mayn't have been derailing
you mayn't have been derailing
they mayn't have been derailing	

Forme interrogative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
may I derail?
may you derail?
may he derail?
may we derail?
may you derail?
may they derail? 	may I be derailing?
may you be derailing?
may he be derailing?
may we be derailing?
may you be derailing?
may they be derailing? 	may I have derailed?
may you have derailed?
may he have derailed?
may we have derailed?
may you have derailed?
may they have derailed? 	may I have been derailing?
may you have been derailing?
may he have been derailing?
may we have been derailing?
may you have been derailing?
may they have been derailing? 	

Forme interro-négative 	
Forme simple 	Forme en V-ing 	Perfect 	Perfect en V-ing 	
mayn't I derail?
mayn't you derail?
mayn't he derail?
mayn't we derail?
mayn't you derail?
mayn't they derail? 	mayn't I be derailing?
mayn't you be derailing?
mayn't he be derailing?
mayn't we be derailing?
mayn't you be derailing?
mayn't they be derailing? 	mayn't I have derailed?
mayn't you have derailed?
mayn't he have derailed?
mayn't we have derailed?
mayn't you have derailed?
mayn't they have derailed? 	mayn't I have been derailing?
mayn't you have been derailing?
mayn't he have been derailing?
mayn't we have been derailing?
mayn't you have been derailing?
mayn't they have been derailing?