must wreck
Verbo regular: wreck - wrecked- wrecked

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must wreck
you must wreck
he must wreck
we must wreck
you must wreck
they must wreck 	I must be wrecking
you must be wrecking
he must be wrecking
we must be wrecking
you must be wrecking
they must be wrecking	I must have wrecked
you must have wrecked
he must have wrecked
we must have wrecked
you must have wrecked
they must have wrecked	I must have been wrecking
you must have been wrecking
he must have been wrecking
we must have been wrecking
you must have been wrecking
they must have been wrecking	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't wreck
you mustn't wreck
he mustn't wreck
we mustn't wreck
you mustn't wreck
they mustn't wreck 	I mustn't be wrecking
you mustn't be wrecking
he mustn't be wrecking
we mustn't be wrecking
you mustn't be wrecking
they mustn't be wrecking	I mustn't have wrecked
you mustn't have wrecked
he mustn't have wrecked
we mustn't have wrecked
you mustn't have wrecked
they mustn't have wrecked	I mustn't have been wrecking
you mustn't have been wrecking
he mustn't have been wrecking
we mustn't have been wrecking
you mustn't have been wrecking
they mustn't have been wrecking	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I wreck?
must you wreck?
must he wreck?
must we wreck?
must you wreck?
must they wreck? 	must I be wrecking?
must you be wrecking?
must he be wrecking?
must we be wrecking?
must you be wrecking?
must they be wrecking? 	must I have wrecked?
must you have wrecked?
must he have wrecked?
must we have wrecked?
must you have wrecked?
must they have wrecked? 	must I have been wrecking?
must you have been wrecking?
must he have been wrecking?
must we have been wrecking?
must you have been wrecking?
must they have been wrecking? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I wreck?
mustn't you wreck?
mustn't he wreck?
mustn't we wreck?
mustn't you wreck?
mustn't they wreck? 	mustn't I be wrecking?
mustn't you be wrecking?
mustn't he be wrecking?
mustn't we be wrecking?
mustn't you be wrecking?
mustn't they be wrecking? 	mustn't I have wrecked?
mustn't you have wrecked?
mustn't he have wrecked?
mustn't we have wrecked?
mustn't you have wrecked?
mustn't they have wrecked? 	mustn't I have been wrecking?
mustn't you have been wrecking?
mustn't he have been wrecking?
mustn't we have been wrecking?
mustn't you have been wrecking?
mustn't they have been wrecking?