must shovel
Verbo regular: shovel - shovelled- shovelled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must shovel
you must shovel
she must shovel
we must shovel
you must shovel
they must shovel 	I must be shovelling
you must be shovelling
she must be shovelling
we must be shovelling
you must be shovelling
they must be shovelling	I must have shovelled
you must have shovelled
she must have shovelled
we must have shovelled
you must have shovelled
they must have shovelled	I must have been shovelling
you must have been shovelling
she must have been shovelling
we must have been shovelling
you must have been shovelling
they must have been shovelling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not shovel
you must not shovel
she must not shovel
we must not shovel
you must not shovel
they must not shovel 	I must not be shovelling
you must not be shovelling
she must not be shovelling
we must not be shovelling
you must not be shovelling
they must not be shovelling	I must not have shovelled
you must not have shovelled
she must not have shovelled
we must not have shovelled
you must not have shovelled
they must not have shovelled	I must not have been shovelling
you must not have been shovelling
she must not have been shovelling
we must not have been shovelling
you must not have been shovelling
they must not have been shovelling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I shovel?
must you shovel?
must she shovel?
must we shovel?
must you shovel?
must they shovel? 	must I be shovelling?
must you be shovelling?
must she be shovelling?
must we be shovelling?
must you be shovelling?
must they be shovelling? 	must I have shovelled?
must you have shovelled?
must she have shovelled?
must we have shovelled?
must you have shovelled?
must they have shovelled? 	must I have been shovelling?
must you have been shovelling?
must she have been shovelling?
must we have been shovelling?
must you have been shovelling?
must they have been shovelling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not shovel?
must you not shovel?
must she not shovel?
must we not shovel?
must you not shovel?
must they not shovel? 	must I not be shovelling?
must you not be shovelling?
must she not be shovelling?
must we not be shovelling?
must you not be shovelling?
must they not be shovelling? 	must I not have shovelled?
must you not have shovelled?
must she not have shovelled?
must we not have shovelled?
must you not have shovelled?
must they not have shovelled? 	must I not have been shovelling?
must you not have been shovelling?
must she not have been shovelling?
must we not have been shovelling?
must you not have been shovelling?
must they not have been shovelling?