must grapple
Verbo regular: grapple - grappled- grappled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must grapple
you must grapple
he must grapple
we must grapple
you must grapple
they must grapple 	I must be grappling
you must be grappling
he must be grappling
we must be grappling
you must be grappling
they must be grappling	I must have grappled
you must have grappled
he must have grappled
we must have grappled
you must have grappled
they must have grappled	I must have been grappling
you must have been grappling
he must have been grappling
we must have been grappling
you must have been grappling
they must have been grappling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't grapple
you mustn't grapple
he mustn't grapple
we mustn't grapple
you mustn't grapple
they mustn't grapple 	I mustn't be grappling
you mustn't be grappling
he mustn't be grappling
we mustn't be grappling
you mustn't be grappling
they mustn't be grappling	I mustn't have grappled
you mustn't have grappled
he mustn't have grappled
we mustn't have grappled
you mustn't have grappled
they mustn't have grappled	I mustn't have been grappling
you mustn't have been grappling
he mustn't have been grappling
we mustn't have been grappling
you mustn't have been grappling
they mustn't have been grappling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I grapple?
must you grapple?
must he grapple?
must we grapple?
must you grapple?
must they grapple? 	must I be grappling?
must you be grappling?
must he be grappling?
must we be grappling?
must you be grappling?
must they be grappling? 	must I have grappled?
must you have grappled?
must he have grappled?
must we have grappled?
must you have grappled?
must they have grappled? 	must I have been grappling?
must you have been grappling?
must he have been grappling?
must we have been grappling?
must you have been grappling?
must they have been grappling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I grapple?
mustn't you grapple?
mustn't he grapple?
mustn't we grapple?
mustn't you grapple?
mustn't they grapple? 	mustn't I be grappling?
mustn't you be grappling?
mustn't he be grappling?
mustn't we be grappling?
mustn't you be grappling?
mustn't they be grappling? 	mustn't I have grappled?
mustn't you have grappled?
mustn't he have grappled?
mustn't we have grappled?
mustn't you have grappled?
mustn't they have grappled? 	mustn't I have been grappling?
mustn't you have been grappling?
mustn't he have been grappling?
mustn't we have been grappling?
mustn't you have been grappling?
mustn't they have been grappling?