should headbutt
Verbo regular: headbutt - headbutted- headbutted

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

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

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

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