must tambour
Verbo regular: tambour - tamboured- tamboured

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must tambour
you must tambour
he must tambour
we must tambour
you must tambour
they must tambour 	I must be tambouring
you must be tambouring
he must be tambouring
we must be tambouring
you must be tambouring
they must be tambouring	I must have tamboured
you must have tamboured
he must have tamboured
we must have tamboured
you must have tamboured
they must have tamboured	I must have been tambouring
you must have been tambouring
he must have been tambouring
we must have been tambouring
you must have been tambouring
they must have been tambouring	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not tambour
you must not tambour
he must not tambour
we must not tambour
you must not tambour
they must not tambour 	I must not be tambouring
you must not be tambouring
he must not be tambouring
we must not be tambouring
you must not be tambouring
they must not be tambouring	I must not have tamboured
you must not have tamboured
he must not have tamboured
we must not have tamboured
you must not have tamboured
they must not have tamboured	I must not have been tambouring
you must not have been tambouring
he must not have been tambouring
we must not have been tambouring
you must not have been tambouring
they must not have been tambouring	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I tambour?
must you tambour?
must he tambour?
must we tambour?
must you tambour?
must they tambour? 	must I be tambouring?
must you be tambouring?
must he be tambouring?
must we be tambouring?
must you be tambouring?
must they be tambouring? 	must I have tamboured?
must you have tamboured?
must he have tamboured?
must we have tamboured?
must you have tamboured?
must they have tamboured? 	must I have been tambouring?
must you have been tambouring?
must he have been tambouring?
must we have been tambouring?
must you have been tambouring?
must they have been tambouring? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not tambour?
must you not tambour?
must he not tambour?
must we not tambour?
must you not tambour?
must they not tambour? 	must I not be tambouring?
must you not be tambouring?
must he not be tambouring?
must we not be tambouring?
must you not be tambouring?
must they not be tambouring? 	must I not have tamboured?
must you not have tamboured?
must he not have tamboured?
must we not have tamboured?
must you not have tamboured?
must they not have tamboured? 	must I not have been tambouring?
must you not have been tambouring?
must he not have been tambouring?
must we not have been tambouring?
must you not have been tambouring?
must they not have been tambouring?