must detect
Verbo regular: detect - detected- detected

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must detect
you must detect
he must detect
we must detect
you must detect
they must detect 	I must be detecting
you must be detecting
he must be detecting
we must be detecting
you must be detecting
they must be detecting	I must have detected
you must have detected
he must have detected
we must have detected
you must have detected
they must have detected	I must have been detecting
you must have been detecting
he must have been detecting
we must have been detecting
you must have been detecting
they must have been detecting	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not detect
you must not detect
he must not detect
we must not detect
you must not detect
they must not detect 	I must not be detecting
you must not be detecting
he must not be detecting
we must not be detecting
you must not be detecting
they must not be detecting	I must not have detected
you must not have detected
he must not have detected
we must not have detected
you must not have detected
they must not have detected	I must not have been detecting
you must not have been detecting
he must not have been detecting
we must not have been detecting
you must not have been detecting
they must not have been detecting	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I detect?
must you detect?
must he detect?
must we detect?
must you detect?
must they detect? 	must I be detecting?
must you be detecting?
must he be detecting?
must we be detecting?
must you be detecting?
must they be detecting? 	must I have detected?
must you have detected?
must he have detected?
must we have detected?
must you have detected?
must they have detected? 	must I have been detecting?
must you have been detecting?
must he have been detecting?
must we have been detecting?
must you have been detecting?
must they have been detecting? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not detect?
must you not detect?
must he not detect?
must we not detect?
must you not detect?
must they not detect? 	must I not be detecting?
must you not be detecting?
must he not be detecting?
must we not be detecting?
must you not be detecting?
must they not be detecting? 	must I not have detected?
must you not have detected?
must he not have detected?
must we not have detected?
must you not have detected?
must they not have detected? 	must I not have been detecting?
must you not have been detecting?
must he not have been detecting?
must we not have been detecting?
must you not have been detecting?
must they not have been detecting?