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
she must grass
we must grass
you must grass
they must grass 	I must be grassing
you must be grassing
she must be grassing
we must be grassing
you must be grassing
they must be grassing	I must have grassed
you must have grassed
she 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
she 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 must not grass
you must not grass
she must not grass
we must not grass
you must not grass
they must not grass 	I must not be grassing
you must not be grassing
she must not be grassing
we must not be grassing
you must not be grassing
they must not be grassing	I must not have grassed
you must not have grassed
she must not have grassed
we must not have grassed
you must not have grassed
they must not have grassed	I must not have been grassing
you must not have been grassing
she must not have been grassing
we must not have been grassing
you must not have been grassing
they must not have been grassing	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I grass?
must you grass?
must she grass?
must we grass?
must you grass?
must they grass? 	must I be grassing?
must you be grassing?
must she be grassing?
must we be grassing?
must you be grassing?
must they be grassing? 	must I have grassed?
must you have grassed?
must she 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 she 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 	
must I not grass?
must you not grass?
must she not grass?
must we not grass?
must you not grass?
must they not grass? 	must I not be grassing?
must you not be grassing?
must she not be grassing?
must we not be grassing?
must you not be grassing?
must they not be grassing? 	must I not have grassed?
must you not have grassed?
must she not have grassed?
must we not have grassed?
must you not have grassed?
must they not have grassed? 	must I not have been grassing?
must you not have been grassing?
must she not have been grassing?
must we not have been grassing?
must you not have been grassing?
must they not have been grassing?