English verb conjugation
MUST STERILISE

Regular verb: sterilise - sterilised - sterilised

Affirmation

Simple form	V-ing form
I must sterilise you must sterilise she must sterilise we must sterilise you must sterilise they must sterilise	I must be sterilising you must be sterilising she must be sterilising we must be sterilising you must be sterilising they must be sterilising
Perfect	V-ing perfect
I must have sterilised you must have sterilised she must have sterilised we must have sterilised you must have sterilised they must have sterilised	I must have been sterilising you must have been sterilising she must have been sterilising we must have been sterilising you must have been sterilising they must have been sterilising

Negation

Simple form	V-ing form
I mustn't sterilise you mustn't sterilise she mustn't sterilise we mustn't sterilise you mustn't sterilise they mustn't sterilise	I mustn't be sterilising you mustn't be sterilising she mustn't be sterilising we mustn't be sterilising you mustn't be sterilising they mustn't be sterilising
Perfect	V-ing perfect
I mustn't have sterilised you mustn't have sterilised she mustn't have sterilised we mustn't have sterilised you mustn't have sterilised they mustn't have sterilised	I mustn't have been sterilising you mustn't have been sterilising she mustn't have been sterilising we mustn't have been sterilising you mustn't have been sterilising they mustn't have been sterilising

Interrogative form

Simple form	V-ing form
must I sterilise? must you sterilise? must she sterilise? must we sterilise? must you sterilise? must they sterilise?	must I be sterilising? must you be sterilising? must she be sterilising? must we be sterilising? must you be sterilising? must they be sterilising?
Perfect	V-ing perfect
must I have sterilised? must you have sterilised? must she have sterilised? must we have sterilised? must you have sterilised? must they have sterilised?	must I have been sterilising? must you have been sterilising? must she have been sterilising? must we have been sterilising? must you have been sterilising? must they have been sterilising?

Interro-negative form

Simple form	V-ing form
mustn't I sterilise? mustn't you sterilise? mustn't she sterilise? mustn't we sterilise? mustn't you sterilise? mustn't they sterilise?	mustn't I be sterilising? mustn't you be sterilising? mustn't she be sterilising? mustn't we be sterilising? mustn't you be sterilising? mustn't they be sterilising?
Perfect	V-ing perfect
mustn't I have sterilised? mustn't you have sterilised? mustn't she have sterilised? mustn't we have sterilised? mustn't you have sterilised? mustn't they have sterilised?	mustn't I have been sterilising? mustn't you have been sterilising? mustn't she have been sterilising? mustn't we have been sterilising? mustn't you have been sterilising? mustn't they have been sterilising?