must serge
Verbo regular: serge - serged- serged

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must serge
you must serge
he must serge
we must serge
you must serge
they must serge 	I must be serging
you must be serging
he must be serging
we must be serging
you must be serging
they must be serging	I must have serged
you must have serged
he must have serged
we must have serged
you must have serged
they must have serged	I must have been serging
you must have been serging
he must have been serging
we must have been serging
you must have been serging
they must have been serging	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not serge
you must not serge
he must not serge
we must not serge
you must not serge
they must not serge 	I must not be serging
you must not be serging
he must not be serging
we must not be serging
you must not be serging
they must not be serging	I must not have serged
you must not have serged
he must not have serged
we must not have serged
you must not have serged
they must not have serged	I must not have been serging
you must not have been serging
he must not have been serging
we must not have been serging
you must not have been serging
they must not have been serging	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I serge?
must you serge?
must he serge?
must we serge?
must you serge?
must they serge? 	must I be serging?
must you be serging?
must he be serging?
must we be serging?
must you be serging?
must they be serging? 	must I have serged?
must you have serged?
must he have serged?
must we have serged?
must you have serged?
must they have serged? 	must I have been serging?
must you have been serging?
must he have been serging?
must we have been serging?
must you have been serging?
must they have been serging? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not serge?
must you not serge?
must he not serge?
must we not serge?
must you not serge?
must they not serge? 	must I not be serging?
must you not be serging?
must he not be serging?
must we not be serging?
must you not be serging?
must they not be serging? 	must I not have serged?
must you not have serged?
must he not have serged?
must we not have serged?
must you not have serged?
must they not have serged? 	must I not have been serging?
must you not have been serging?
must he not have been serging?
must we not have been serging?
must you not have been serging?
must they not have been serging?