may firm
Regular verb: firm - firmed- firmed

Affirmation 	
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I may firm
you may firm
he may firm
we may firm
you may firm
they may firm 	I may be firming
you may be firming
he may be firming
we may be firming
you may be firming
they may be firming	I may have firmed
you may have firmed
he may have firmed
we may have firmed
you may have firmed
they may have firmed	I may have been firming
you may have been firming
he may have been firming
we may have been firming
you may have been firming
they may have been firming	

Negation 	
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I may not firm
you may not firm
he may not firm
we may not firm
you may not firm
they may not firm 	I may not be firming
you may not be firming
he may not be firming
we may not be firming
you may not be firming
they may not be firming	I may not have firmed
you may not have firmed
he may not have firmed
we may not have firmed
you may not have firmed
they may not have firmed	I may not have been firming
you may not have been firming
he may not have been firming
we may not have been firming
you may not have been firming
they may not have been firming	

Interrogative form 	
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may I firm?
may you firm?
may he firm?
may we firm?
may you firm?
may they firm? 	may I be firming?
may you be firming?
may he be firming?
may we be firming?
may you be firming?
may they be firming? 	may I have firmed?
may you have firmed?
may he have firmed?
may we have firmed?
may you have firmed?
may they have firmed? 	may I have been firming?
may you have been firming?
may he have been firming?
may we have been firming?
may you have been firming?
may they have been firming? 	

Interro-negative form 	
Simple form 	V-ing form 	Perfect 	V-ing perfect 	
may I not firm?
may you not firm?
may he not firm?
may we not firm?
may you not firm?
may they not firm? 	may I not be firming?
may you not be firming?
may he not be firming?
may we not be firming?
may you not be firming?
may they not be firming? 	may I not have firmed?
may you not have firmed?
may he not have firmed?
may we not have firmed?
may you not have firmed?
may they not have firmed? 	may I not have been firming?
may you not have been firming?
may he not have been firming?
may we not have been firming?
may you not have been firming?
may they not have been firming?