must discant
Verbo regular: discant - discanted- discanted

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must discant
you must discant
he must discant
we must discant
you must discant
they must discant 	I must be discanting
you must be discanting
he must be discanting
we must be discanting
you must be discanting
they must be discanting	I must have discanted
you must have discanted
he must have discanted
we must have discanted
you must have discanted
they must have discanted	I must have been discanting
you must have been discanting
he must have been discanting
we must have been discanting
you must have been discanting
they must have been discanting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't discant
you mustn't discant
he mustn't discant
we mustn't discant
you mustn't discant
they mustn't discant 	I mustn't be discanting
you mustn't be discanting
he mustn't be discanting
we mustn't be discanting
you mustn't be discanting
they mustn't be discanting	I mustn't have discanted
you mustn't have discanted
he mustn't have discanted
we mustn't have discanted
you mustn't have discanted
they mustn't have discanted	I mustn't have been discanting
you mustn't have been discanting
he mustn't have been discanting
we mustn't have been discanting
you mustn't have been discanting
they mustn't have been discanting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I discant?
must you discant?
must he discant?
must we discant?
must you discant?
must they discant? 	must I be discanting?
must you be discanting?
must he be discanting?
must we be discanting?
must you be discanting?
must they be discanting? 	must I have discanted?
must you have discanted?
must he have discanted?
must we have discanted?
must you have discanted?
must they have discanted? 	must I have been discanting?
must you have been discanting?
must he have been discanting?
must we have been discanting?
must you have been discanting?
must they have been discanting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I discant?
mustn't you discant?
mustn't he discant?
mustn't we discant?
mustn't you discant?
mustn't they discant? 	mustn't I be discanting?
mustn't you be discanting?
mustn't he be discanting?
mustn't we be discanting?
mustn't you be discanting?
mustn't they be discanting? 	mustn't I have discanted?
mustn't you have discanted?
mustn't he have discanted?
mustn't we have discanted?
mustn't you have discanted?
mustn't they have discanted? 	mustn't I have been discanting?
mustn't you have been discanting?
mustn't he have been discanting?
mustn't we have been discanting?
mustn't you have been discanting?
mustn't they have been discanting?