must richen
Verbo regular: richen - richened- richened

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must richen
you must richen
he must richen
we must richen
you must richen
they must richen 	I must be richening
you must be richening
he must be richening
we must be richening
you must be richening
they must be richening	I must have richened
you must have richened
he must have richened
we must have richened
you must have richened
they must have richened	I must have been richening
you must have been richening
he must have been richening
we must have been richening
you must have been richening
they must have been richening	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't richen
you mustn't richen
he mustn't richen
we mustn't richen
you mustn't richen
they mustn't richen 	I mustn't be richening
you mustn't be richening
he mustn't be richening
we mustn't be richening
you mustn't be richening
they mustn't be richening	I mustn't have richened
you mustn't have richened
he mustn't have richened
we mustn't have richened
you mustn't have richened
they mustn't have richened	I mustn't have been richening
you mustn't have been richening
he mustn't have been richening
we mustn't have been richening
you mustn't have been richening
they mustn't have been richening	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I richen?
must you richen?
must he richen?
must we richen?
must you richen?
must they richen? 	must I be richening?
must you be richening?
must he be richening?
must we be richening?
must you be richening?
must they be richening? 	must I have richened?
must you have richened?
must he have richened?
must we have richened?
must you have richened?
must they have richened? 	must I have been richening?
must you have been richening?
must he have been richening?
must we have been richening?
must you have been richening?
must they have been richening? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I richen?
mustn't you richen?
mustn't he richen?
mustn't we richen?
mustn't you richen?
mustn't they richen? 	mustn't I be richening?
mustn't you be richening?
mustn't he be richening?
mustn't we be richening?
mustn't you be richening?
mustn't they be richening? 	mustn't I have richened?
mustn't you have richened?
mustn't he have richened?
mustn't we have richened?
mustn't you have richened?
mustn't they have richened? 	mustn't I have been richening?
mustn't you have been richening?
mustn't he have been richening?
mustn't we have been richening?
mustn't you have been richening?
mustn't they have been richening?