English verb conjugation
MUST PREFERTILISE

Regular verb: prefertilise - prefertilised - prefertilised

Affirmation

Simple form	V-ing form
I must prefertilise you must prefertilise he must prefertilise we must prefertilise you must prefertilise they must prefertilise	I must be prefertilising you must be prefertilising he must be prefertilising we must be prefertilising you must be prefertilising they must be prefertilising
Perfect	V-ing perfect
I must have prefertilised you must have prefertilised he must have prefertilised we must have prefertilised you must have prefertilised they must have prefertilised	I must have been prefertilising you must have been prefertilising he must have been prefertilising we must have been prefertilising you must have been prefertilising they must have been prefertilising

Negation

Simple form	V-ing form
I mustn't prefertilise you mustn't prefertilise he mustn't prefertilise we mustn't prefertilise you mustn't prefertilise they mustn't prefertilise	I mustn't be prefertilising you mustn't be prefertilising he mustn't be prefertilising we mustn't be prefertilising you mustn't be prefertilising they mustn't be prefertilising
Perfect	V-ing perfect
I mustn't have prefertilised you mustn't have prefertilised he mustn't have prefertilised we mustn't have prefertilised you mustn't have prefertilised they mustn't have prefertilised	I mustn't have been prefertilising you mustn't have been prefertilising he mustn't have been prefertilising we mustn't have been prefertilising you mustn't have been prefertilising they mustn't have been prefertilising

Interrogative form

Simple form	V-ing form
must I prefertilise? must you prefertilise? must he prefertilise? must we prefertilise? must you prefertilise? must they prefertilise?	must I be prefertilising? must you be prefertilising? must he be prefertilising? must we be prefertilising? must you be prefertilising? must they be prefertilising?
Perfect	V-ing perfect
must I have prefertilised? must you have prefertilised? must he have prefertilised? must we have prefertilised? must you have prefertilised? must they have prefertilised?	must I have been prefertilising? must you have been prefertilising? must he have been prefertilising? must we have been prefertilising? must you have been prefertilising? must they have been prefertilising?

Interro-negative form

Simple form	V-ing form
mustn't I prefertilise? mustn't you prefertilise? mustn't he prefertilise? mustn't we prefertilise? mustn't you prefertilise? mustn't they prefertilise?	mustn't I be prefertilising? mustn't you be prefertilising? mustn't he be prefertilising? mustn't we be prefertilising? mustn't you be prefertilising? mustn't they be prefertilising?
Perfect	V-ing perfect
mustn't I have prefertilised? mustn't you have prefertilised? mustn't he have prefertilised? mustn't we have prefertilised? mustn't you have prefertilised? mustn't they have prefertilised?	mustn't I have been prefertilising? mustn't you have been prefertilising? mustn't he have been prefertilising? mustn't we have been prefertilising? mustn't you have been prefertilising? mustn't they have been prefertilising?