should headbutt
Verbo regular: headbutt - headbutted- headbutted

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I'd headbutt
you'd headbutt
he'd headbutt
we'd headbutt
you'd headbutt
they'd headbutt 	I'd be headbutting
you'd be headbutting
he'd be headbutting
we'd be headbutting
you'd be headbutting
they'd be headbutting	I should've headbutted
you should've headbutted
he should've headbutted
we should've headbutted
you should've headbutted
they should've headbutted	I should've been headbutting
you should've been headbutting
he should've been headbutting
we should've been headbutting
you should've been headbutting
they should've been headbutting	

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

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
should I headbutt?
should you headbutt?
should he headbutt?
should we headbutt?
should you headbutt?
should they headbutt? 	should I be headbutting?
should you be headbutting?
should he be headbutting?
should we be headbutting?
should you be headbutting?
should they be headbutting? 	should I have headbutted?
should you have headbutted?
should he have headbutted?
should we have headbutted?
should you have headbutted?
should they have headbutted? 	should I have been headbutting?
should you have been headbutting?
should he have been headbutting?
should we have been headbutting?
should you have been headbutting?
should they have been headbutting? 	

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