must perish
Verbo regular: perish - perished- perished

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must perish
you must perish
she must perish
we must perish
you must perish
they must perish 	I must be perishing
you must be perishing
she must be perishing
we must be perishing
you must be perishing
they must be perishing	I must have perished
you must have perished
she must have perished
we must have perished
you must have perished
they must have perished	I must have been perishing
you must have been perishing
she must have been perishing
we must have been perishing
you must have been perishing
they must have been perishing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I mustn't perish
you mustn't perish
she mustn't perish
we mustn't perish
you mustn't perish
they mustn't perish 	I mustn't be perishing
you mustn't be perishing
she mustn't be perishing
we mustn't be perishing
you mustn't be perishing
they mustn't be perishing	I mustn't have perished
you mustn't have perished
she mustn't have perished
we mustn't have perished
you mustn't have perished
they mustn't have perished	I mustn't have been perishing
you mustn't have been perishing
she mustn't have been perishing
we mustn't have been perishing
you mustn't have been perishing
they mustn't have been perishing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I perish?
must you perish?
must she perish?
must we perish?
must you perish?
must they perish? 	must I be perishing?
must you be perishing?
must she be perishing?
must we be perishing?
must you be perishing?
must they be perishing? 	must I have perished?
must you have perished?
must she have perished?
must we have perished?
must you have perished?
must they have perished? 	must I have been perishing?
must you have been perishing?
must she have been perishing?
must we have been perishing?
must you have been perishing?
must they have been perishing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
mustn't I perish?
mustn't you perish?
mustn't she perish?
mustn't we perish?
mustn't you perish?
mustn't they perish? 	mustn't I be perishing?
mustn't you be perishing?
mustn't she be perishing?
mustn't we be perishing?
mustn't you be perishing?
mustn't they be perishing? 	mustn't I have perished?
mustn't you have perished?
mustn't she have perished?
mustn't we have perished?
mustn't you have perished?
mustn't they have perished? 	mustn't I have been perishing?
mustn't you have been perishing?
mustn't she have been perishing?
mustn't we have been perishing?
mustn't you have been perishing?
mustn't they have been perishing?