may headbutt
Verbo regular: headbutt - headbutted- headbutted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may headbutt
you may headbutt
he may headbutt
we may headbutt
you may headbutt
they may headbutt 	I may be headbutting
you may be headbutting
he may be headbutting
we may be headbutting
you may be headbutting
they may be headbutting	I may have headbutted
you may have headbutted
he may have headbutted
we may have headbutted
you may have headbutted
they may have headbutted	I may have been headbutting
you may have been headbutting
he may have been headbutting
we may have been headbutting
you may have been headbutting
they may have been headbutting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I may not headbutt
you may not headbutt
he may not headbutt
we may not headbutt
you may not headbutt
they may not headbutt 	I may not be headbutting
you may not be headbutting
he may not be headbutting
we may not be headbutting
you may not be headbutting
they may not be headbutting	I may not have headbutted
you may not have headbutted
he may not have headbutted
we may not have headbutted
you may not have headbutted
they may not have headbutted	I may not have been headbutting
you may not have been headbutting
he may not have been headbutting
we may not have been headbutting
you may not have been headbutting
they may not have been headbutting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I headbutt?
may you headbutt?
may he headbutt?
may we headbutt?
may you headbutt?
may they headbutt? 	may I be headbutting?
may you be headbutting?
may he be headbutting?
may we be headbutting?
may you be headbutting?
may they be headbutting? 	may I have headbutted?
may you have headbutted?
may he have headbutted?
may we have headbutted?
may you have headbutted?
may they have headbutted? 	may I have been headbutting?
may you have been headbutting?
may he have been headbutting?
may we have been headbutting?
may you have been headbutting?
may they have been headbutting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
may I not headbutt?
may you not headbutt?
may he not headbutt?
may we not headbutt?
may you not headbutt?
may they not headbutt? 	may I not be headbutting?
may you not be headbutting?
may he not be headbutting?
may we not be headbutting?
may you not be headbutting?
may they not be headbutting? 	may I not have headbutted?
may you not have headbutted?
may he not have headbutted?
may we not have headbutted?
may you not have headbutted?
may they not have headbutted? 	may I not have been headbutting?
may you not have been headbutting?
may he not have been headbutting?
may we not have been headbutting?
may you not have been headbutting?
may they not have been headbutting?