must wrinkle
Verbo regular: wrinkle - wrinkled- wrinkled

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must wrinkle
you must wrinkle
he must wrinkle
we must wrinkle
you must wrinkle
they must wrinkle 	I must be wrinkling
you must be wrinkling
he must be wrinkling
we must be wrinkling
you must be wrinkling
they must be wrinkling	I must have wrinkled
you must have wrinkled
he must have wrinkled
we must have wrinkled
you must have wrinkled
they must have wrinkled	I must have been wrinkling
you must have been wrinkling
he must have been wrinkling
we must have been wrinkling
you must have been wrinkling
they must have been wrinkling	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't wrinkle
you mustn't wrinkle
he mustn't wrinkle
we mustn't wrinkle
you mustn't wrinkle
they mustn't wrinkle 	I mustn't be wrinkling
you mustn't be wrinkling
he mustn't be wrinkling
we mustn't be wrinkling
you mustn't be wrinkling
they mustn't be wrinkling	I mustn't have wrinkled
you mustn't have wrinkled
he mustn't have wrinkled
we mustn't have wrinkled
you mustn't have wrinkled
they mustn't have wrinkled	I mustn't have been wrinkling
you mustn't have been wrinkling
he mustn't have been wrinkling
we mustn't have been wrinkling
you mustn't have been wrinkling
they mustn't have been wrinkling	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I wrinkle?
must you wrinkle?
must he wrinkle?
must we wrinkle?
must you wrinkle?
must they wrinkle? 	must I be wrinkling?
must you be wrinkling?
must he be wrinkling?
must we be wrinkling?
must you be wrinkling?
must they be wrinkling? 	must I have wrinkled?
must you have wrinkled?
must he have wrinkled?
must we have wrinkled?
must you have wrinkled?
must they have wrinkled? 	must I have been wrinkling?
must you have been wrinkling?
must he have been wrinkling?
must we have been wrinkling?
must you have been wrinkling?
must they have been wrinkling? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I wrinkle?
mustn't you wrinkle?
mustn't he wrinkle?
mustn't we wrinkle?
mustn't you wrinkle?
mustn't they wrinkle? 	mustn't I be wrinkling?
mustn't you be wrinkling?
mustn't he be wrinkling?
mustn't we be wrinkling?
mustn't you be wrinkling?
mustn't they be wrinkling? 	mustn't I have wrinkled?
mustn't you have wrinkled?
mustn't he have wrinkled?
mustn't we have wrinkled?
mustn't you have wrinkled?
mustn't they have wrinkled? 	mustn't I have been wrinkling?
mustn't you have been wrinkling?
mustn't he have been wrinkling?
mustn't we have been wrinkling?
mustn't you have been wrinkling?
mustn't they have been wrinkling?