must petition
Verbo regular: petition - petitioned- petitioned

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must petition
you must petition
he must petition
we must petition
you must petition
they must petition 	I must be petitioning
you must be petitioning
he must be petitioning
we must be petitioning
you must be petitioning
they must be petitioning	I must have petitioned
you must have petitioned
he must have petitioned
we must have petitioned
you must have petitioned
they must have petitioned	I must have been petitioning
you must have been petitioning
he must have been petitioning
we must have been petitioning
you must have been petitioning
they must have been petitioning	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't petition
you mustn't petition
he mustn't petition
we mustn't petition
you mustn't petition
they mustn't petition 	I mustn't be petitioning
you mustn't be petitioning
he mustn't be petitioning
we mustn't be petitioning
you mustn't be petitioning
they mustn't be petitioning	I mustn't have petitioned
you mustn't have petitioned
he mustn't have petitioned
we mustn't have petitioned
you mustn't have petitioned
they mustn't have petitioned	I mustn't have been petitioning
you mustn't have been petitioning
he mustn't have been petitioning
we mustn't have been petitioning
you mustn't have been petitioning
they mustn't have been petitioning	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I petition?
must you petition?
must he petition?
must we petition?
must you petition?
must they petition? 	must I be petitioning?
must you be petitioning?
must he be petitioning?
must we be petitioning?
must you be petitioning?
must they be petitioning? 	must I have petitioned?
must you have petitioned?
must he have petitioned?
must we have petitioned?
must you have petitioned?
must they have petitioned? 	must I have been petitioning?
must you have been petitioning?
must he have been petitioning?
must we have been petitioning?
must you have been petitioning?
must they have been petitioning? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I petition?
mustn't you petition?
mustn't he petition?
mustn't we petition?
mustn't you petition?
mustn't they petition? 	mustn't I be petitioning?
mustn't you be petitioning?
mustn't he be petitioning?
mustn't we be petitioning?
mustn't you be petitioning?
mustn't they be petitioning? 	mustn't I have petitioned?
mustn't you have petitioned?
mustn't he have petitioned?
mustn't we have petitioned?
mustn't you have petitioned?
mustn't they have petitioned? 	mustn't I have been petitioning?
mustn't you have been petitioning?
mustn't he have been petitioning?
mustn't we have been petitioning?
mustn't you have been petitioning?
mustn't they have been petitioning?