must cheat
Verbo regular: cheat - cheated- cheated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must cheat
you must cheat
she must cheat
we must cheat
you must cheat
they must cheat 	I must be cheating
you must be cheating
she must be cheating
we must be cheating
you must be cheating
they must be cheating	I must have cheated
you must have cheated
she must have cheated
we must have cheated
you must have cheated
they must have cheated	I must have been cheating
you must have been cheating
she must have been cheating
we must have been cheating
you must have been cheating
they must have been cheating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't cheat
you mustn't cheat
she mustn't cheat
we mustn't cheat
you mustn't cheat
they mustn't cheat 	I mustn't be cheating
you mustn't be cheating
she mustn't be cheating
we mustn't be cheating
you mustn't be cheating
they mustn't be cheating	I mustn't have cheated
you mustn't have cheated
she mustn't have cheated
we mustn't have cheated
you mustn't have cheated
they mustn't have cheated	I mustn't have been cheating
you mustn't have been cheating
she mustn't have been cheating
we mustn't have been cheating
you mustn't have been cheating
they mustn't have been cheating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I cheat?
must you cheat?
must she cheat?
must we cheat?
must you cheat?
must they cheat? 	must I be cheating?
must you be cheating?
must she be cheating?
must we be cheating?
must you be cheating?
must they be cheating? 	must I have cheated?
must you have cheated?
must she have cheated?
must we have cheated?
must you have cheated?
must they have cheated? 	must I have been cheating?
must you have been cheating?
must she have been cheating?
must we have been cheating?
must you have been cheating?
must they have been cheating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I cheat?
mustn't you cheat?
mustn't she cheat?
mustn't we cheat?
mustn't you cheat?
mustn't they cheat? 	mustn't I be cheating?
mustn't you be cheating?
mustn't she be cheating?
mustn't we be cheating?
mustn't you be cheating?
mustn't they be cheating? 	mustn't I have cheated?
mustn't you have cheated?
mustn't she have cheated?
mustn't we have cheated?
mustn't you have cheated?
mustn't they have cheated? 	mustn't I have been cheating?
mustn't you have been cheating?
mustn't she have been cheating?
mustn't we have been cheating?
mustn't you have been cheating?
mustn't they have been cheating?