may ground
Regular verb: ground - grounded- grounded

Affirmation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I may ground
you may ground
he may ground
we may ground
you may ground
they may ground 	I may be grounding
you may be grounding
he may be grounding
we may be grounding
you may be grounding
they may be grounding	I may have grounded
you may have grounded
he may have grounded
we may have grounded
you may have grounded
they may have grounded	I may have been grounding
you may have been grounding
he may have been grounding
we may have been grounding
you may have been grounding
they may have been grounding	

Negation 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
I mayn't ground
you mayn't ground
he mayn't ground
we mayn't ground
you mayn't ground
they mayn't ground 	I mayn't be grounding
you mayn't be grounding
he mayn't be grounding
we mayn't be grounding
you mayn't be grounding
they mayn't be grounding	I mayn't have grounded
you mayn't have grounded
he mayn't have grounded
we mayn't have grounded
you mayn't have grounded
they mayn't have grounded	I mayn't have been grounding
you mayn't have been grounding
he mayn't have been grounding
we mayn't have been grounding
you mayn't have been grounding
they mayn't have been grounding	

Interrogative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I ground?
may you ground?
may he ground?
may we ground?
may you ground?
may they ground? 	may I be grounding?
may you be grounding?
may he be grounding?
may we be grounding?
may you be grounding?
may they be grounding? 	may I have grounded?
may you have grounded?
may he have grounded?
may we have grounded?
may you have grounded?
may they have grounded? 	may I have been grounding?
may you have been grounding?
may he have been grounding?
may we have been grounding?
may you have been grounding?
may they have been grounding? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
mayn't I ground?
mayn't you ground?
mayn't he ground?
mayn't we ground?
mayn't you ground?
mayn't they ground? 	mayn't I be grounding?
mayn't you be grounding?
mayn't he be grounding?
mayn't we be grounding?
mayn't you be grounding?
mayn't they be grounding? 	mayn't I have grounded?
mayn't you have grounded?
mayn't he have grounded?
mayn't we have grounded?
mayn't you have grounded?
mayn't they have grounded? 	mayn't I have been grounding?
mayn't you have been grounding?
mayn't he have been grounding?
mayn't we have been grounding?
mayn't you have been grounding?
mayn't they have been grounding?