must regrind
Verbo irregolare: regrind - reground- reground

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must regrind
you must regrind
he must regrind
we must regrind
you must regrind
they must regrind 	I must be regrinding
you must be regrinding
he must be regrinding
we must be regrinding
you must be regrinding
they must be regrinding	I must have reground
you must have reground
he must have reground
we must have reground
you must have reground
they must have reground	I must have been regrinding
you must have been regrinding
he must have been regrinding
we must have been regrinding
you must have been regrinding
they must have been regrinding	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I mustn't regrind
you mustn't regrind
he mustn't regrind
we mustn't regrind
you mustn't regrind
they mustn't regrind 	I mustn't be regrinding
you mustn't be regrinding
he mustn't be regrinding
we mustn't be regrinding
you mustn't be regrinding
they mustn't be regrinding	I mustn't have reground
you mustn't have reground
he mustn't have reground
we mustn't have reground
you mustn't have reground
they mustn't have reground	I mustn't have been regrinding
you mustn't have been regrinding
he mustn't have been regrinding
we mustn't have been regrinding
you mustn't have been regrinding
they mustn't have been regrinding	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I regrind?
must you regrind?
must he regrind?
must we regrind?
must you regrind?
must they regrind? 	must I be regrinding?
must you be regrinding?
must he be regrinding?
must we be regrinding?
must you be regrinding?
must they be regrinding? 	must I have reground?
must you have reground?
must he have reground?
must we have reground?
must you have reground?
must they have reground? 	must I have been regrinding?
must you have been regrinding?
must he have been regrinding?
must we have been regrinding?
must you have been regrinding?
must they have been regrinding? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
mustn't I regrind?
mustn't you regrind?
mustn't he regrind?
mustn't we regrind?
mustn't you regrind?
mustn't they regrind? 	mustn't I be regrinding?
mustn't you be regrinding?
mustn't he be regrinding?
mustn't we be regrinding?
mustn't you be regrinding?
mustn't they be regrinding? 	mustn't I have reground?
mustn't you have reground?
mustn't he have reground?
mustn't we have reground?
mustn't you have reground?
mustn't they have reground? 	mustn't I have been regrinding?
mustn't you have been regrinding?
mustn't he have been regrinding?
mustn't we have been regrinding?
mustn't you have been regrinding?
mustn't they have been regrinding?