must arc
Verbo regular: arc - arced- arced

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must arc
you must arc
she must arc
we must arc
you must arc
they must arc 	I must be arcing
you must be arcing
she must be arcing
we must be arcing
you must be arcing
they must be arcing	I must have arced
you must have arced
she must have arced
we must have arced
you must have arced
they must have arced	I must have been arcing
you must have been arcing
she must have been arcing
we must have been arcing
you must have been arcing
they must have been arcing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't arc
you mustn't arc
she mustn't arc
we mustn't arc
you mustn't arc
they mustn't arc 	I mustn't be arcing
you mustn't be arcing
she mustn't be arcing
we mustn't be arcing
you mustn't be arcing
they mustn't be arcing	I mustn't have arced
you mustn't have arced
she mustn't have arced
we mustn't have arced
you mustn't have arced
they mustn't have arced	I mustn't have been arcing
you mustn't have been arcing
she mustn't have been arcing
we mustn't have been arcing
you mustn't have been arcing
they mustn't have been arcing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I arc?
must you arc?
must she arc?
must we arc?
must you arc?
must they arc? 	must I be arcing?
must you be arcing?
must she be arcing?
must we be arcing?
must you be arcing?
must they be arcing? 	must I have arced?
must you have arced?
must she have arced?
must we have arced?
must you have arced?
must they have arced? 	must I have been arcing?
must you have been arcing?
must she have been arcing?
must we have been arcing?
must you have been arcing?
must they have been arcing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I arc?
mustn't you arc?
mustn't she arc?
mustn't we arc?
mustn't you arc?
mustn't they arc? 	mustn't I be arcing?
mustn't you be arcing?
mustn't she be arcing?
mustn't we be arcing?
mustn't you be arcing?
mustn't they be arcing? 	mustn't I have arced?
mustn't you have arced?
mustn't she have arced?
mustn't we have arced?
mustn't you have arced?
mustn't they have arced? 	mustn't I have been arcing?
mustn't you have been arcing?
mustn't she have been arcing?
mustn't we have been arcing?
mustn't you have been arcing?
mustn't they have been arcing?