must upturn
Verbo regolare: upturn - upturned- upturned

Affermazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must upturn
you must upturn
he must upturn
we must upturn
you must upturn
they must upturn 	I must be upturning
you must be upturning
he must be upturning
we must be upturning
you must be upturning
they must be upturning	I must have upturned
you must have upturned
he must have upturned
we must have upturned
you must have upturned
they must have upturned	I must have been upturning
you must have been upturning
he must have been upturning
we must have been upturning
you must have been upturning
they must have been upturning	

Negazione 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
I must not upturn
you must not upturn
he must not upturn
we must not upturn
you must not upturn
they must not upturn 	I must not be upturning
you must not be upturning
he must not be upturning
we must not be upturning
you must not be upturning
they must not be upturning	I must not have upturned
you must not have upturned
he must not have upturned
we must not have upturned
you must not have upturned
they must not have upturned	I must not have been upturning
you must not have been upturning
he must not have been upturning
we must not have been upturning
you must not have been upturning
they must not have been upturning	

Forma interrogativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I upturn?
must you upturn?
must he upturn?
must we upturn?
must you upturn?
must they upturn? 	must I be upturning?
must you be upturning?
must he be upturning?
must we be upturning?
must you be upturning?
must they be upturning? 	must I have upturned?
must you have upturned?
must he have upturned?
must we have upturned?
must you have upturned?
must they have upturned? 	must I have been upturning?
must you have been upturning?
must he have been upturning?
must we have been upturning?
must you have been upturning?
must they have been upturning? 	

Forma interro-negativa 	
Forma semplice 	Forma con V-ing 	Perfetto 	Perfetto con V-ing 	
must I not upturn?
must you not upturn?
must he not upturn?
must we not upturn?
must you not upturn?
must they not upturn? 	must I not be upturning?
must you not be upturning?
must he not be upturning?
must we not be upturning?
must you not be upturning?
must they not be upturning? 	must I not have upturned?
must you not have upturned?
must he not have upturned?
must we not have upturned?
must you not have upturned?
must they not have upturned? 	must I not have been upturning?
must you not have been upturning?
must he not have been upturning?
must we not have been upturning?
must you not have been upturning?
must they not have been upturning?