must stag
Verbo regular: stag - staged- staged

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must stag
you must stag
he must stag
we must stag
you must stag
they must stag 	I must be staging
you must be staging
he must be staging
we must be staging
you must be staging
they must be staging	I must have staged
you must have staged
he must have staged
we must have staged
you must have staged
they must have staged	I must have been staging
you must have been staging
he must have been staging
we must have been staging
you must have been staging
they must have been staging	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not stag
you must not stag
he must not stag
we must not stag
you must not stag
they must not stag 	I must not be staging
you must not be staging
he must not be staging
we must not be staging
you must not be staging
they must not be staging	I must not have staged
you must not have staged
he must not have staged
we must not have staged
you must not have staged
they must not have staged	I must not have been staging
you must not have been staging
he must not have been staging
we must not have been staging
you must not have been staging
they must not have been staging	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I stag?
must you stag?
must he stag?
must we stag?
must you stag?
must they stag? 	must I be staging?
must you be staging?
must he be staging?
must we be staging?
must you be staging?
must they be staging? 	must I have staged?
must you have staged?
must he have staged?
must we have staged?
must you have staged?
must they have staged? 	must I have been staging?
must you have been staging?
must he have been staging?
must we have been staging?
must you have been staging?
must they have been staging? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not stag?
must you not stag?
must he not stag?
must we not stag?
must you not stag?
must they not stag? 	must I not be staging?
must you not be staging?
must he not be staging?
must we not be staging?
must you not be staging?
must they not be staging? 	must I not have staged?
must you not have staged?
must he not have staged?
must we not have staged?
must you not have staged?
must they not have staged? 	must I not have been staging?
must you not have been staging?
must he not have been staging?
must we not have been staging?
must you not have been staging?
must they not have been staging?