must subspecialise
Verbo regular: subspecialise - subspecialised- subspecialised

Afirmación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must subspecialise
you must subspecialise
he must subspecialise
we must subspecialise
you must subspecialise
they must subspecialise 	I must be subspecialising
you must be subspecialising
he must be subspecialising
we must be subspecialising
you must be subspecialising
they must be subspecialising	I must have subspecialised
you must have subspecialised
he must have subspecialised
we must have subspecialised
you must have subspecialised
they must have subspecialised	I must have been subspecialising
you must have been subspecialising
he must have been subspecialising
we must have been subspecialising
you must have been subspecialising
they must have been subspecialising	

Negación 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
I must not subspecialise
you must not subspecialise
he must not subspecialise
we must not subspecialise
you must not subspecialise
they must not subspecialise 	I must not be subspecialising
you must not be subspecialising
he must not be subspecialising
we must not be subspecialising
you must not be subspecialising
they must not be subspecialising	I must not have subspecialised
you must not have subspecialised
he must not have subspecialised
we must not have subspecialised
you must not have subspecialised
they must not have subspecialised	I must not have been subspecialising
you must not have been subspecialising
he must not have been subspecialising
we must not have been subspecialising
you must not have been subspecialising
they must not have been subspecialising	

Forma interrogativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I subspecialise?
must you subspecialise?
must he subspecialise?
must we subspecialise?
must you subspecialise?
must they subspecialise? 	must I be subspecialising?
must you be subspecialising?
must he be subspecialising?
must we be subspecialising?
must you be subspecialising?
must they be subspecialising? 	must I have subspecialised?
must you have subspecialised?
must he have subspecialised?
must we have subspecialised?
must you have subspecialised?
must they have subspecialised? 	must I have been subspecialising?
must you have been subspecialising?
must he have been subspecialising?
must we have been subspecialising?
must you have been subspecialising?
must they have been subspecialising? 	

Forma interro-negativa 	
Forma simple 	Forma con V-ing 	Perfecto 	Perfecto con V-ing 	
must I not subspecialise?
must you not subspecialise?
must he not subspecialise?
must we not subspecialise?
must you not subspecialise?
must they not subspecialise? 	must I not be subspecialising?
must you not be subspecialising?
must he not be subspecialising?
must we not be subspecialising?
must you not be subspecialising?
must they not be subspecialising? 	must I not have subspecialised?
must you not have subspecialised?
must he not have subspecialised?
must we not have subspecialised?
must you not have subspecialised?
must they not have subspecialised? 	must I not have been subspecialising?
must you not have been subspecialising?
must he not have been subspecialising?
must we not have been subspecialising?
must you not have been subspecialising?
must they not have been subspecialising?