must grass
Verbo regolare: grass - grassed- grassed

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must grass
you must grass
he must grass
we must grass
you must grass
they must grass 	I must be grassing
you must be grassing
he must be grassing
we must be grassing
you must be grassing
they must be grassing	I must have grassed
you must have grassed
he must have grassed
we must have grassed
you must have grassed
they must have grassed	I must have been grassing
you must have been grassing
he must have been grassing
we must have been grassing
you must have been grassing
they must have been grassing	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I mustn't grass
you mustn't grass
he mustn't grass
we mustn't grass
you mustn't grass
they mustn't grass 	I mustn't be grassing
you mustn't be grassing
he mustn't be grassing
we mustn't be grassing
you mustn't be grassing
they mustn't be grassing	I mustn't have grassed
you mustn't have grassed
he mustn't have grassed
we mustn't have grassed
you mustn't have grassed
they mustn't have grassed	I mustn't have been grassing
you mustn't have been grassing
he mustn't have been grassing
we mustn't have been grassing
you mustn't have been grassing
they mustn't have been grassing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I grass?
must you grass?
must he grass?
must we grass?
must you grass?
must they grass? 	must I be grassing?
must you be grassing?
must he be grassing?
must we be grassing?
must you be grassing?
must they be grassing? 	must I have grassed?
must you have grassed?
must he have grassed?
must we have grassed?
must you have grassed?
must they have grassed? 	must I have been grassing?
must you have been grassing?
must he have been grassing?
must we have been grassing?
must you have been grassing?
must they have been grassing? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
mustn't I grass?
mustn't you grass?
mustn't he grass?
mustn't we grass?
mustn't you grass?
mustn't they grass? 	mustn't I be grassing?
mustn't you be grassing?
mustn't he be grassing?
mustn't we be grassing?
mustn't you be grassing?
mustn't they be grassing? 	mustn't I have grassed?
mustn't you have grassed?
mustn't he have grassed?
mustn't we have grassed?
mustn't you have grassed?
mustn't they have grassed? 	mustn't I have been grassing?
mustn't you have been grassing?
mustn't he have been grassing?
mustn't we have been grassing?
mustn't you have been grassing?
mustn't they have been grassing?