must suffocate
Verbo regular: suffocate - suffocated- suffocated

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must suffocate
you must suffocate
he must suffocate
we must suffocate
you must suffocate
they must suffocate 	I must be suffocating
you must be suffocating
he must be suffocating
we must be suffocating
you must be suffocating
they must be suffocating	I must have suffocated
you must have suffocated
he must have suffocated
we must have suffocated
you must have suffocated
they must have suffocated	I must have been suffocating
you must have been suffocating
he must have been suffocating
we must have been suffocating
you must have been suffocating
they must have been suffocating	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't suffocate
you mustn't suffocate
he mustn't suffocate
we mustn't suffocate
you mustn't suffocate
they mustn't suffocate 	I mustn't be suffocating
you mustn't be suffocating
he mustn't be suffocating
we mustn't be suffocating
you mustn't be suffocating
they mustn't be suffocating	I mustn't have suffocated
you mustn't have suffocated
he mustn't have suffocated
we mustn't have suffocated
you mustn't have suffocated
they mustn't have suffocated	I mustn't have been suffocating
you mustn't have been suffocating
he mustn't have been suffocating
we mustn't have been suffocating
you mustn't have been suffocating
they mustn't have been suffocating	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I suffocate?
must you suffocate?
must he suffocate?
must we suffocate?
must you suffocate?
must they suffocate? 	must I be suffocating?
must you be suffocating?
must he be suffocating?
must we be suffocating?
must you be suffocating?
must they be suffocating? 	must I have suffocated?
must you have suffocated?
must he have suffocated?
must we have suffocated?
must you have suffocated?
must they have suffocated? 	must I have been suffocating?
must you have been suffocating?
must he have been suffocating?
must we have been suffocating?
must you have been suffocating?
must they have been suffocating? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I suffocate?
mustn't you suffocate?
mustn't he suffocate?
mustn't we suffocate?
mustn't you suffocate?
mustn't they suffocate? 	mustn't I be suffocating?
mustn't you be suffocating?
mustn't he be suffocating?
mustn't we be suffocating?
mustn't you be suffocating?
mustn't they be suffocating? 	mustn't I have suffocated?
mustn't you have suffocated?
mustn't he have suffocated?
mustn't we have suffocated?
mustn't you have suffocated?
mustn't they have suffocated? 	mustn't I have been suffocating?
mustn't you have been suffocating?
mustn't he have been suffocating?
mustn't we have been suffocating?
mustn't you have been suffocating?
mustn't they have been suffocating?