may puncture
Regular verb: puncture - punctured- punctured

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may puncture
you may puncture
she may puncture
we may puncture
you may puncture
they may puncture 	I may be puncturing
you may be puncturing
she may be puncturing
we may be puncturing
you may be puncturing
they may be puncturing	I may have punctured
you may have punctured
she may have punctured
we may have punctured
you may have punctured
they may have punctured	I may have been puncturing
you may have been puncturing
she may have been puncturing
we may have been puncturing
you may have been puncturing
they may have been puncturing	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't puncture
you mayn't puncture
she mayn't puncture
we mayn't puncture
you mayn't puncture
they mayn't puncture 	I mayn't be puncturing
you mayn't be puncturing
she mayn't be puncturing
we mayn't be puncturing
you mayn't be puncturing
they mayn't be puncturing	I mayn't have punctured
you mayn't have punctured
she mayn't have punctured
we mayn't have punctured
you mayn't have punctured
they mayn't have punctured	I mayn't have been puncturing
you mayn't have been puncturing
she mayn't have been puncturing
we mayn't have been puncturing
you mayn't have been puncturing
they mayn't have been puncturing	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I puncture?
may you puncture?
may she puncture?
may we puncture?
may you puncture?
may they puncture? 	may I be puncturing?
may you be puncturing?
may she be puncturing?
may we be puncturing?
may you be puncturing?
may they be puncturing? 	may I have punctured?
may you have punctured?
may she have punctured?
may we have punctured?
may you have punctured?
may they have punctured? 	may I have been puncturing?
may you have been puncturing?
may she have been puncturing?
may we have been puncturing?
may you have been puncturing?
may they have been puncturing? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I puncture?
mayn't you puncture?
mayn't she puncture?
mayn't we puncture?
mayn't you puncture?
mayn't they puncture? 	mayn't I be puncturing?
mayn't you be puncturing?
mayn't she be puncturing?
mayn't we be puncturing?
mayn't you be puncturing?
mayn't they be puncturing? 	mayn't I have punctured?
mayn't you have punctured?
mayn't she have punctured?
mayn't we have punctured?
mayn't you have punctured?
mayn't they have punctured? 	mayn't I have been puncturing?
mayn't you have been puncturing?
mayn't she have been puncturing?
mayn't we have been puncturing?
mayn't you have been puncturing?
mayn't they have been puncturing?