may underinsure
Regular verb: underinsure - underinsured- underinsured

Affirmation 	
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I may underinsure
you may underinsure
he may underinsure
we may underinsure
you may underinsure
they may underinsure 	I may be underinsuring
you may be underinsuring
he may be underinsuring
we may be underinsuring
you may be underinsuring
they may be underinsuring	I may have underinsured
you may have underinsured
he may have underinsured
we may have underinsured
you may have underinsured
they may have underinsured	I may have been underinsuring
you may have been underinsuring
he may have been underinsuring
we may have been underinsuring
you may have been underinsuring
they may have been underinsuring	

Negation 	
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I mayn't underinsure
you mayn't underinsure
he mayn't underinsure
we mayn't underinsure
you mayn't underinsure
they mayn't underinsure 	I mayn't be underinsuring
you mayn't be underinsuring
he mayn't be underinsuring
we mayn't be underinsuring
you mayn't be underinsuring
they mayn't be underinsuring	I mayn't have underinsured
you mayn't have underinsured
he mayn't have underinsured
we mayn't have underinsured
you mayn't have underinsured
they mayn't have underinsured	I mayn't have been underinsuring
you mayn't have been underinsuring
he mayn't have been underinsuring
we mayn't have been underinsuring
you mayn't have been underinsuring
they mayn't have been underinsuring	

Interrogative form 	
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may I underinsure?
may you underinsure?
may he underinsure?
may we underinsure?
may you underinsure?
may they underinsure? 	may I be underinsuring?
may you be underinsuring?
may he be underinsuring?
may we be underinsuring?
may you be underinsuring?
may they be underinsuring? 	may I have underinsured?
may you have underinsured?
may he have underinsured?
may we have underinsured?
may you have underinsured?
may they have underinsured? 	may I have been underinsuring?
may you have been underinsuring?
may he have been underinsuring?
may we have been underinsuring?
may you have been underinsuring?
may they have been underinsuring? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I underinsure?
mayn't you underinsure?
mayn't he underinsure?
mayn't we underinsure?
mayn't you underinsure?
mayn't they underinsure? 	mayn't I be underinsuring?
mayn't you be underinsuring?
mayn't he be underinsuring?
mayn't we be underinsuring?
mayn't you be underinsuring?
mayn't they be underinsuring? 	mayn't I have underinsured?
mayn't you have underinsured?
mayn't he have underinsured?
mayn't we have underinsured?
mayn't you have underinsured?
mayn't they have underinsured? 	mayn't I have been underinsuring?
mayn't you have been underinsuring?
mayn't he have been underinsuring?
mayn't we have been underinsuring?
mayn't you have been underinsuring?
mayn't they have been underinsuring?