may bill
Regular verb: bill - billed- billed

Affirmation 	
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I may bill
you may bill
he may bill
we may bill
you may bill
they may bill 	I may be billing
you may be billing
he may be billing
we may be billing
you may be billing
they may be billing	I may have billed
you may have billed
he may have billed
we may have billed
you may have billed
they may have billed	I may have been billing
you may have been billing
he may have been billing
we may have been billing
you may have been billing
they may have been billing	

Negation 	
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I may not bill
you may not bill
he may not bill
we may not bill
you may not bill
they may not bill 	I may not be billing
you may not be billing
he may not be billing
we may not be billing
you may not be billing
they may not be billing	I may not have billed
you may not have billed
he may not have billed
we may not have billed
you may not have billed
they may not have billed	I may not have been billing
you may not have been billing
he may not have been billing
we may not have been billing
you may not have been billing
they may not have been billing	

Interrogative form 	
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may I bill?
may you bill?
may he bill?
may we bill?
may you bill?
may they bill? 	may I be billing?
may you be billing?
may he be billing?
may we be billing?
may you be billing?
may they be billing? 	may I have billed?
may you have billed?
may he have billed?
may we have billed?
may you have billed?
may they have billed? 	may I have been billing?
may you have been billing?
may he have been billing?
may we have been billing?
may you have been billing?
may they have been billing? 	

Interro-negative form 	
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may I not bill?
may you not bill?
may he not bill?
may we not bill?
may you not bill?
may they not bill? 	may I not be billing?
may you not be billing?
may he not be billing?
may we not be billing?
may you not be billing?
may they not be billing? 	may I not have billed?
may you not have billed?
may he not have billed?
may we not have billed?
may you not have billed?
may they not have billed? 	may I not have been billing?
may you not have been billing?
may he not have been billing?
may we not have been billing?
may you not have been billing?
may they not have been billing?