must found
Verbo regular: found - founded- founded

Afirmação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I must found
you must found
he must found
we must found
you must found
they must found 	I must be founding
you must be founding
he must be founding
we must be founding
you must be founding
they must be founding	I must have founded
you must have founded
he must have founded
we must have founded
you must have founded
they must have founded	I must have been founding
you must have been founding
he must have been founding
we must have been founding
you must have been founding
they must have been founding	

Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
I mustn't found
you mustn't found
he mustn't found
we mustn't found
you mustn't found
they mustn't found 	I mustn't be founding
you mustn't be founding
he mustn't be founding
we mustn't be founding
you mustn't be founding
they mustn't be founding	I mustn't have founded
you mustn't have founded
he mustn't have founded
we mustn't have founded
you mustn't have founded
they mustn't have founded	I mustn't have been founding
you mustn't have been founding
he mustn't have been founding
we mustn't have been founding
you mustn't have been founding
they mustn't have been founding	

Forma interrogativa 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
must I found?
must you found?
must he found?
must we found?
must you found?
must they found? 	must I be founding?
must you be founding?
must he be founding?
must we be founding?
must you be founding?
must they be founding? 	must I have founded?
must you have founded?
must he have founded?
must we have founded?
must you have founded?
must they have founded? 	must I have been founding?
must you have been founding?
must he have been founding?
must we have been founding?
must you have been founding?
must they have been founding? 	

Forma interro-Negação 	
Forma simple 	Forma com V-ing 	Perfeito 	Perfeito com V-ing 	
mustn't I found?
mustn't you found?
mustn't he found?
mustn't we found?
mustn't you found?
mustn't they found? 	mustn't I be founding?
mustn't you be founding?
mustn't he be founding?
mustn't we be founding?
mustn't you be founding?
mustn't they be founding? 	mustn't I have founded?
mustn't you have founded?
mustn't he have founded?
mustn't we have founded?
mustn't you have founded?
mustn't they have founded? 	mustn't I have been founding?
mustn't you have been founding?
mustn't he have been founding?
mustn't we have been founding?
mustn't you have been founding?
mustn't they have been founding?