must summon
Verbo regular: summon - summoned- summoned

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must summon
you must summon
he must summon
we must summon
you must summon
they must summon 	I must be summoning
you must be summoning
he must be summoning
we must be summoning
you must be summoning
they must be summoning	I must have summoned
you must have summoned
he must have summoned
we must have summoned
you must have summoned
they must have summoned	I must have been summoning
you must have been summoning
he must have been summoning
we must have been summoning
you must have been summoning
they must have been summoning	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not summon
you must not summon
he must not summon
we must not summon
you must not summon
they must not summon 	I must not be summoning
you must not be summoning
he must not be summoning
we must not be summoning
you must not be summoning
they must not be summoning	I must not have summoned
you must not have summoned
he must not have summoned
we must not have summoned
you must not have summoned
they must not have summoned	I must not have been summoning
you must not have been summoning
he must not have been summoning
we must not have been summoning
you must not have been summoning
they must not have been summoning	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I summon?
must you summon?
must he summon?
must we summon?
must you summon?
must they summon? 	must I be summoning?
must you be summoning?
must he be summoning?
must we be summoning?
must you be summoning?
must they be summoning? 	must I have summoned?
must you have summoned?
must he have summoned?
must we have summoned?
must you have summoned?
must they have summoned? 	must I have been summoning?
must you have been summoning?
must he have been summoning?
must we have been summoning?
must you have been summoning?
must they have been summoning? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not summon?
must you not summon?
must he not summon?
must we not summon?
must you not summon?
must they not summon? 	must I not be summoning?
must you not be summoning?
must he not be summoning?
must we not be summoning?
must you not be summoning?
must they not be summoning? 	must I not have summoned?
must you not have summoned?
must he not have summoned?
must we not have summoned?
must you not have summoned?
must they not have summoned? 	must I not have been summoning?
must you not have been summoning?
must he not have been summoning?
must we not have been summoning?
must you not have been summoning?
must they not have been summoning?