must gag
Verbo regular: gag - gagged- gagged

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must gag
you must gag
he must gag
we must gag
you must gag
they must gag 	I must be gagging
you must be gagging
he must be gagging
we must be gagging
you must be gagging
they must be gagging	I must have gagged
you must have gagged
he must have gagged
we must have gagged
you must have gagged
they must have gagged	I must have been gagging
you must have been gagging
he must have been gagging
we must have been gagging
you must have been gagging
they must have been gagging	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not gag
you must not gag
he must not gag
we must not gag
you must not gag
they must not gag 	I must not be gagging
you must not be gagging
he must not be gagging
we must not be gagging
you must not be gagging
they must not be gagging	I must not have gagged
you must not have gagged
he must not have gagged
we must not have gagged
you must not have gagged
they must not have gagged	I must not have been gagging
you must not have been gagging
he must not have been gagging
we must not have been gagging
you must not have been gagging
they must not have been gagging	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I gag?
must you gag?
must he gag?
must we gag?
must you gag?
must they gag? 	must I be gagging?
must you be gagging?
must he be gagging?
must we be gagging?
must you be gagging?
must they be gagging? 	must I have gagged?
must you have gagged?
must he have gagged?
must we have gagged?
must you have gagged?
must they have gagged? 	must I have been gagging?
must you have been gagging?
must he have been gagging?
must we have been gagging?
must you have been gagging?
must they have been gagging? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not gag?
must you not gag?
must he not gag?
must we not gag?
must you not gag?
must they not gag? 	must I not be gagging?
must you not be gagging?
must he not be gagging?
must we not be gagging?
must you not be gagging?
must they not be gagging? 	must I not have gagged?
must you not have gagged?
must he not have gagged?
must we not have gagged?
must you not have gagged?
must they not have gagged? 	must I not have been gagging?
must you not have been gagging?
must he not have been gagging?
must we not have been gagging?
must you not have been gagging?
must they not have been gagging?