may persevere
Regular verb: persevere - persevered- persevered

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may persevere
you may persevere
she may persevere
we may persevere
you may persevere
they may persevere 	I may be persevering
you may be persevering
she may be persevering
we may be persevering
you may be persevering
they may be persevering	I may have persevered
you may have persevered
she may have persevered
we may have persevered
you may have persevered
they may have persevered	I may have been persevering
you may have been persevering
she may have been persevering
we may have been persevering
you may have been persevering
they may have been persevering	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't persevere
you mayn't persevere
she mayn't persevere
we mayn't persevere
you mayn't persevere
they mayn't persevere 	I mayn't be persevering
you mayn't be persevering
she mayn't be persevering
we mayn't be persevering
you mayn't be persevering
they mayn't be persevering	I mayn't have persevered
you mayn't have persevered
she mayn't have persevered
we mayn't have persevered
you mayn't have persevered
they mayn't have persevered	I mayn't have been persevering
you mayn't have been persevering
she mayn't have been persevering
we mayn't have been persevering
you mayn't have been persevering
they mayn't have been persevering	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I persevere?
may you persevere?
may she persevere?
may we persevere?
may you persevere?
may they persevere? 	may I be persevering?
may you be persevering?
may she be persevering?
may we be persevering?
may you be persevering?
may they be persevering? 	may I have persevered?
may you have persevered?
may she have persevered?
may we have persevered?
may you have persevered?
may they have persevered? 	may I have been persevering?
may you have been persevering?
may she have been persevering?
may we have been persevering?
may you have been persevering?
may they have been persevering? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I persevere?
mayn't you persevere?
mayn't she persevere?
mayn't we persevere?
mayn't you persevere?
mayn't they persevere? 	mayn't I be persevering?
mayn't you be persevering?
mayn't she be persevering?
mayn't we be persevering?
mayn't you be persevering?
mayn't they be persevering? 	mayn't I have persevered?
mayn't you have persevered?
mayn't she have persevered?
mayn't we have persevered?
mayn't you have persevered?
mayn't they have persevered? 	mayn't I have been persevering?
mayn't you have been persevering?
mayn't she have been persevering?
mayn't we have been persevering?
mayn't you have been persevering?
mayn't they have been persevering?