must precode
Verbo regular: precode - precoded- precoded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must precode
you must precode
she must precode
we must precode
you must precode
they must precode 	I must be precoding
you must be precoding
she must be precoding
we must be precoding
you must be precoding
they must be precoding	I must have precoded
you must have precoded
she must have precoded
we must have precoded
you must have precoded
they must have precoded	I must have been precoding
you must have been precoding
she must have been precoding
we must have been precoding
you must have been precoding
they must have been precoding	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't precode
you mustn't precode
she mustn't precode
we mustn't precode
you mustn't precode
they mustn't precode 	I mustn't be precoding
you mustn't be precoding
she mustn't be precoding
we mustn't be precoding
you mustn't be precoding
they mustn't be precoding	I mustn't have precoded
you mustn't have precoded
she mustn't have precoded
we mustn't have precoded
you mustn't have precoded
they mustn't have precoded	I mustn't have been precoding
you mustn't have been precoding
she mustn't have been precoding
we mustn't have been precoding
you mustn't have been precoding
they mustn't have been precoding	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I precode?
must you precode?
must she precode?
must we precode?
must you precode?
must they precode? 	must I be precoding?
must you be precoding?
must she be precoding?
must we be precoding?
must you be precoding?
must they be precoding? 	must I have precoded?
must you have precoded?
must she have precoded?
must we have precoded?
must you have precoded?
must they have precoded? 	must I have been precoding?
must you have been precoding?
must she have been precoding?
must we have been precoding?
must you have been precoding?
must they have been precoding? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I precode?
mustn't you precode?
mustn't she precode?
mustn't we precode?
mustn't you precode?
mustn't they precode? 	mustn't I be precoding?
mustn't you be precoding?
mustn't she be precoding?
mustn't we be precoding?
mustn't you be precoding?
mustn't they be precoding? 	mustn't I have precoded?
mustn't you have precoded?
mustn't she have precoded?
mustn't we have precoded?
mustn't you have precoded?
mustn't they have precoded? 	mustn't I have been precoding?
mustn't you have been precoding?
mustn't she have been precoding?
mustn't we have been precoding?
mustn't you have been precoding?
mustn't they have been precoding?