must foui
Verbo regular: foui - fouied- fouied

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must foui
you must foui
he must foui
we must foui
you must foui
they must foui 	I must be fouiing
you must be fouiing
he must be fouiing
we must be fouiing
you must be fouiing
they must be fouiing	I must have fouied
you must have fouied
he must have fouied
we must have fouied
you must have fouied
they must have fouied	I must have been fouiing
you must have been fouiing
he must have been fouiing
we must have been fouiing
you must have been fouiing
they must have been fouiing	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not foui
you must not foui
he must not foui
we must not foui
you must not foui
they must not foui 	I must not be fouiing
you must not be fouiing
he must not be fouiing
we must not be fouiing
you must not be fouiing
they must not be fouiing	I must not have fouied
you must not have fouied
he must not have fouied
we must not have fouied
you must not have fouied
they must not have fouied	I must not have been fouiing
you must not have been fouiing
he must not have been fouiing
we must not have been fouiing
you must not have been fouiing
they must not have been fouiing	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I foui?
must you foui?
must he foui?
must we foui?
must you foui?
must they foui? 	must I be fouiing?
must you be fouiing?
must he be fouiing?
must we be fouiing?
must you be fouiing?
must they be fouiing? 	must I have fouied?
must you have fouied?
must he have fouied?
must we have fouied?
must you have fouied?
must they have fouied? 	must I have been fouiing?
must you have been fouiing?
must he have been fouiing?
must we have been fouiing?
must you have been fouiing?
must they have been fouiing? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not foui?
must you not foui?
must he not foui?
must we not foui?
must you not foui?
must they not foui? 	must I not be fouiing?
must you not be fouiing?
must he not be fouiing?
must we not be fouiing?
must you not be fouiing?
must they not be fouiing? 	must I not have fouied?
must you not have fouied?
must he not have fouied?
must we not have fouied?
must you not have fouied?
must they not have fouied? 	must I not have been fouiing?
must you not have been fouiing?
must he not have been fouiing?
must we not have been fouiing?
must you not have been fouiing?
must they not have been fouiing?