must restring
Verbo regular: restring - restringed- restringed

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must restring
you must restring
he must restring
we must restring
you must restring
they must restring 	I must be restringing
you must be restringing
he must be restringing
we must be restringing
you must be restringing
they must be restringing	I must have restringed
you must have restringed
he must have restringed
we must have restringed
you must have restringed
they must have restringed	I must have been restringing
you must have been restringing
he must have been restringing
we must have been restringing
you must have been restringing
they must have been restringing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not restring
you must not restring
he must not restring
we must not restring
you must not restring
they must not restring 	I must not be restringing
you must not be restringing
he must not be restringing
we must not be restringing
you must not be restringing
they must not be restringing	I must not have restringed
you must not have restringed
he must not have restringed
we must not have restringed
you must not have restringed
they must not have restringed	I must not have been restringing
you must not have been restringing
he must not have been restringing
we must not have been restringing
you must not have been restringing
they must not have been restringing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I restring?
must you restring?
must he restring?
must we restring?
must you restring?
must they restring? 	must I be restringing?
must you be restringing?
must he be restringing?
must we be restringing?
must you be restringing?
must they be restringing? 	must I have restringed?
must you have restringed?
must he have restringed?
must we have restringed?
must you have restringed?
must they have restringed? 	must I have been restringing?
must you have been restringing?
must he have been restringing?
must we have been restringing?
must you have been restringing?
must they have been restringing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not restring?
must you not restring?
must he not restring?
must we not restring?
must you not restring?
must they not restring? 	must I not be restringing?
must you not be restringing?
must he not be restringing?
must we not be restringing?
must you not be restringing?
must they not be restringing? 	must I not have restringed?
must you not have restringed?
must he not have restringed?
must we not have restringed?
must you not have restringed?
must they not have restringed? 	must I not have been restringing?
must you not have been restringing?
must he not have been restringing?
must we not have been restringing?
must you not have been restringing?
must they not have been restringing?