must naturalise
Verbo regular: naturalise - naturalised- naturalised

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must naturalise
you must naturalise
she must naturalise
we must naturalise
you must naturalise
they must naturalise 	I must be naturalising
you must be naturalising
she must be naturalising
we must be naturalising
you must be naturalising
they must be naturalising	I must have naturalised
you must have naturalised
she must have naturalised
we must have naturalised
you must have naturalised
they must have naturalised	I must have been naturalising
you must have been naturalising
she must have been naturalising
we must have been naturalising
you must have been naturalising
they must have been naturalising	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not naturalise
you must not naturalise
she must not naturalise
we must not naturalise
you must not naturalise
they must not naturalise 	I must not be naturalising
you must not be naturalising
she must not be naturalising
we must not be naturalising
you must not be naturalising
they must not be naturalising	I must not have naturalised
you must not have naturalised
she must not have naturalised
we must not have naturalised
you must not have naturalised
they must not have naturalised	I must not have been naturalising
you must not have been naturalising
she must not have been naturalising
we must not have been naturalising
you must not have been naturalising
they must not have been naturalising	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I naturalise?
must you naturalise?
must she naturalise?
must we naturalise?
must you naturalise?
must they naturalise? 	must I be naturalising?
must you be naturalising?
must she be naturalising?
must we be naturalising?
must you be naturalising?
must they be naturalising? 	must I have naturalised?
must you have naturalised?
must she have naturalised?
must we have naturalised?
must you have naturalised?
must they have naturalised? 	must I have been naturalising?
must you have been naturalising?
must she have been naturalising?
must we have been naturalising?
must you have been naturalising?
must they have been naturalising? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not naturalise?
must you not naturalise?
must she not naturalise?
must we not naturalise?
must you not naturalise?
must they not naturalise? 	must I not be naturalising?
must you not be naturalising?
must she not be naturalising?
must we not be naturalising?
must you not be naturalising?
must they not be naturalising? 	must I not have naturalised?
must you not have naturalised?
must she not have naturalised?
must we not have naturalised?
must you not have naturalised?
must they not have naturalised? 	must I not have been naturalising?
must you not have been naturalising?
must she not have been naturalising?
must we not have been naturalising?
must you not have been naturalising?
must they not have been naturalising?