may headbutt
Verbo regular: headbutt - headbutted- headbutted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com 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	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mayn't headbutt
you mayn't headbutt
he mayn't headbutt
we mayn't headbutt
you mayn't headbutt
they mayn't headbutt 	I mayn't be headbutting
you mayn't be headbutting
he mayn't be headbutting
we mayn't be headbutting
you mayn't be headbutting
they mayn't be headbutting	I mayn't have headbutted
you mayn't have headbutted
he mayn't have headbutted
we mayn't have headbutted
you mayn't have headbutted
they mayn't have headbutted	I mayn't have been headbutting
you mayn't have been headbutting
he mayn't have been headbutting
we mayn't have been headbutting
you mayn't have been headbutting
they mayn't have been headbutting	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com 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-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mayn't I headbutt?
mayn't you headbutt?
mayn't he headbutt?
mayn't we headbutt?
mayn't you headbutt?
mayn't they headbutt? 	mayn't I be headbutting?
mayn't you be headbutting?
mayn't he be headbutting?
mayn't we be headbutting?
mayn't you be headbutting?
mayn't they be headbutting? 	mayn't I have headbutted?
mayn't you have headbutted?
mayn't he have headbutted?
mayn't we have headbutted?
mayn't you have headbutted?
mayn't they have headbutted? 	mayn't I have been headbutting?
mayn't you have been headbutting?
mayn't he have been headbutting?
mayn't we have been headbutting?
mayn't you have been headbutting?
mayn't they have been headbutting?