must backstop
Verbo regolare: backstop - backstoped- backstoped

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must backstop
you must backstop
he must backstop
we must backstop
you must backstop
they must backstop 	I must be backstoping
you must be backstoping
he must be backstoping
we must be backstoping
you must be backstoping
they must be backstoping	I must have backstoped
you must have backstoped
he must have backstoped
we must have backstoped
you must have backstoped
they must have backstoped	I must have been backstoping
you must have been backstoping
he must have been backstoping
we must have been backstoping
you must have been backstoping
they must have been backstoping	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I mustn't backstop
you mustn't backstop
he mustn't backstop
we mustn't backstop
you mustn't backstop
they mustn't backstop 	I mustn't be backstoping
you mustn't be backstoping
he mustn't be backstoping
we mustn't be backstoping
you mustn't be backstoping
they mustn't be backstoping	I mustn't have backstoped
you mustn't have backstoped
he mustn't have backstoped
we mustn't have backstoped
you mustn't have backstoped
they mustn't have backstoped	I mustn't have been backstoping
you mustn't have been backstoping
he mustn't have been backstoping
we mustn't have been backstoping
you mustn't have been backstoping
they mustn't have been backstoping	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I backstop?
must you backstop?
must he backstop?
must we backstop?
must you backstop?
must they backstop? 	must I be backstoping?
must you be backstoping?
must he be backstoping?
must we be backstoping?
must you be backstoping?
must they be backstoping? 	must I have backstoped?
must you have backstoped?
must he have backstoped?
must we have backstoped?
must you have backstoped?
must they have backstoped? 	must I have been backstoping?
must you have been backstoping?
must he have been backstoping?
must we have been backstoping?
must you have been backstoping?
must they have been backstoping? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
mustn't I backstop?
mustn't you backstop?
mustn't he backstop?
mustn't we backstop?
mustn't you backstop?
mustn't they backstop? 	mustn't I be backstoping?
mustn't you be backstoping?
mustn't he be backstoping?
mustn't we be backstoping?
mustn't you be backstoping?
mustn't they be backstoping? 	mustn't I have backstoped?
mustn't you have backstoped?
mustn't he have backstoped?
mustn't we have backstoped?
mustn't you have backstoped?
mustn't they have backstoped? 	mustn't I have been backstoping?
mustn't you have been backstoping?
mustn't he have been backstoping?
mustn't we have been backstoping?
mustn't you have been backstoping?
mustn't they have been backstoping?