must gravel
Verbo regular: gravel - gravelled- gravelled

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must gravel
you must gravel
she must gravel
we must gravel
you must gravel
they must gravel 	I must be gravelling
you must be gravelling
she must be gravelling
we must be gravelling
you must be gravelling
they must be gravelling	I must have gravelled
you must have gravelled
she must have gravelled
we must have gravelled
you must have gravelled
they must have gravelled	I must have been gravelling
you must have been gravelling
she must have been gravelling
we must have been gravelling
you must have been gravelling
they must have been gravelling	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't gravel
you mustn't gravel
she mustn't gravel
we mustn't gravel
you mustn't gravel
they mustn't gravel 	I mustn't be gravelling
you mustn't be gravelling
she mustn't be gravelling
we mustn't be gravelling
you mustn't be gravelling
they mustn't be gravelling	I mustn't have gravelled
you mustn't have gravelled
she mustn't have gravelled
we mustn't have gravelled
you mustn't have gravelled
they mustn't have gravelled	I mustn't have been gravelling
you mustn't have been gravelling
she mustn't have been gravelling
we mustn't have been gravelling
you mustn't have been gravelling
they mustn't have been gravelling	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I gravel?
must you gravel?
must she gravel?
must we gravel?
must you gravel?
must they gravel? 	must I be gravelling?
must you be gravelling?
must she be gravelling?
must we be gravelling?
must you be gravelling?
must they be gravelling? 	must I have gravelled?
must you have gravelled?
must she have gravelled?
must we have gravelled?
must you have gravelled?
must they have gravelled? 	must I have been gravelling?
must you have been gravelling?
must she have been gravelling?
must we have been gravelling?
must you have been gravelling?
must they have been gravelling? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I gravel?
mustn't you gravel?
mustn't she gravel?
mustn't we gravel?
mustn't you gravel?
mustn't they gravel? 	mustn't I be gravelling?
mustn't you be gravelling?
mustn't she be gravelling?
mustn't we be gravelling?
mustn't you be gravelling?
mustn't they be gravelling? 	mustn't I have gravelled?
mustn't you have gravelled?
mustn't she have gravelled?
mustn't we have gravelled?
mustn't you have gravelled?
mustn't they have gravelled? 	mustn't I have been gravelling?
mustn't you have been gravelling?
mustn't she have been gravelling?
mustn't we have been gravelling?
mustn't you have been gravelling?
mustn't they have been gravelling?