should gravel
Verbo regular: gravel - gravelled- gravelled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should gravel
you should gravel
she should gravel
we should gravel
you should gravel
they should gravel 	I should be gravelling
you should be gravelling
she should be gravelling
we should be gravelling
you should be gravelling
they should be gravelling	I should have gravelled
you should have gravelled
she should have gravelled
we should have gravelled
you should have gravelled
they should have gravelled	I should have been gravelling
you should have been gravelling
she should have been gravelling
we should have been gravelling
you should have been gravelling
they should have been gravelling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I should not gravel
you should not gravel
she should not gravel
we should not gravel
you should not gravel
they should not gravel 	I should not be gravelling
you should not be gravelling
she should not be gravelling
we should not be gravelling
you should not be gravelling
they should not be gravelling	I should not have gravelled
you should not have gravelled
she should not have gravelled
we should not have gravelled
you should not have gravelled
they should not have gravelled	I should not have been gravelling
you should not have been gravelling
she should not have been gravelling
we should not have been gravelling
you should not have been gravelling
they should not have been gravelling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I gravel?
should you gravel?
should she gravel?
should we gravel?
should you gravel?
should they gravel? 	should I be gravelling?
should you be gravelling?
should she be gravelling?
should we be gravelling?
should you be gravelling?
should they be gravelling? 	should I have gravelled?
should you have gravelled?
should she have gravelled?
should we have gravelled?
should you have gravelled?
should they have gravelled? 	should I have been gravelling?
should you have been gravelling?
should she have been gravelling?
should we have been gravelling?
should you have been gravelling?
should they have been gravelling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
should I not gravel?
should you not gravel?
should she not gravel?
should we not gravel?
should you not gravel?
should they not gravel? 	should I not be gravelling?
should you not be gravelling?
should she not be gravelling?
should we not be gravelling?
should you not be gravelling?
should they not be gravelling? 	should I not have gravelled?
should you not have gravelled?
should she not have gravelled?
should we not have gravelled?
should you not have gravelled?
should they not have gravelled? 	should I not have been gravelling?
should you not have been gravelling?
should she not have been gravelling?
should we not have been gravelling?
should you not have been gravelling?
should they not have been gravelling?