English verb conjugation
MUST SUBSPECIALISE

Regular verb: subspecialise - subspecialised - subspecialised

Affirmation

Simple form	V-ing form
I must subspecialise you must subspecialise she must subspecialise we must subspecialise you must subspecialise they must subspecialise	I must be subspecialising you must be subspecialising she must be subspecialising we must be subspecialising you must be subspecialising they must be subspecialising
Perfect	V-ing perfect
I must have subspecialised you must have subspecialised she 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 she must have been subspecialising we must have been subspecialising you must have been subspecialising they must have been subspecialising

Negation

Simple form	V-ing form
I mustn't subspecialise you mustn't subspecialise she mustn't subspecialise we mustn't subspecialise you mustn't subspecialise they mustn't subspecialise	I mustn't be subspecialising you mustn't be subspecialising she mustn't be subspecialising we mustn't be subspecialising you mustn't be subspecialising they mustn't be subspecialising
Perfect	V-ing perfect
I mustn't have subspecialised you mustn't have subspecialised she mustn't have subspecialised we mustn't have subspecialised you mustn't have subspecialised they mustn't have subspecialised	I mustn't have been subspecialising you mustn't have been subspecialising she mustn't have been subspecialising we mustn't have been subspecialising you mustn't have been subspecialising they mustn't have been subspecialising

Interrogative form

Simple form	V-ing form
must I subspecialise? must you subspecialise? must she subspecialise? must we subspecialise? must you subspecialise? must they subspecialise?	must I be subspecialising? must you be subspecialising? must she be subspecialising? must we be subspecialising? must you be subspecialising? must they be subspecialising?
Perfect	V-ing perfect
must I have subspecialised? must you have subspecialised? must she 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 she have been subspecialising? must we have been subspecialising? must you have been subspecialising? must they have been subspecialising?

Interro-negative form

Simple form	V-ing form
mustn't I subspecialise? mustn't you subspecialise? mustn't she subspecialise? mustn't we subspecialise? mustn't you subspecialise? mustn't they subspecialise?	mustn't I be subspecialising? mustn't you be subspecialising? mustn't she be subspecialising? mustn't we be subspecialising? mustn't you be subspecialising? mustn't they be subspecialising?
Perfect	V-ing perfect
mustn't I have subspecialised? mustn't you have subspecialised? mustn't she have subspecialised? mustn't we have subspecialised? mustn't you have subspecialised? mustn't they have subspecialised?	mustn't I have been subspecialising? mustn't you have been subspecialising? mustn't she have been subspecialising? mustn't we have been subspecialising? mustn't you have been subspecialising? mustn't they have been subspecialising?