English verb conjugation
MUST FERTILISE

Regular verb: fertilise - fertilised - fertilised

Affirmation

Simple form	V-ing form
I must fertilise you must fertilise he must fertilise we must fertilise you must fertilise they must fertilise	I must be fertilising you must be fertilising he must be fertilising we must be fertilising you must be fertilising they must be fertilising
Perfect	V-ing perfect
I must have fertilised you must have fertilised he must have fertilised we must have fertilised you must have fertilised they must have fertilised	I must have been fertilising you must have been fertilising he must have been fertilising we must have been fertilising you must have been fertilising they must have been fertilising

Negation

Simple form	V-ing form
I mustn't fertilise you mustn't fertilise he mustn't fertilise we mustn't fertilise you mustn't fertilise they mustn't fertilise	I mustn't be fertilising you mustn't be fertilising he mustn't be fertilising we mustn't be fertilising you mustn't be fertilising they mustn't be fertilising
Perfect	V-ing perfect
I mustn't have fertilised you mustn't have fertilised he mustn't have fertilised we mustn't have fertilised you mustn't have fertilised they mustn't have fertilised	I mustn't have been fertilising you mustn't have been fertilising he mustn't have been fertilising we mustn't have been fertilising you mustn't have been fertilising they mustn't have been fertilising

Interrogative form

Simple form	V-ing form
must I fertilise? must you fertilise? must he fertilise? must we fertilise? must you fertilise? must they fertilise?	must I be fertilising? must you be fertilising? must he be fertilising? must we be fertilising? must you be fertilising? must they be fertilising?
Perfect	V-ing perfect
must I have fertilised? must you have fertilised? must he have fertilised? must we have fertilised? must you have fertilised? must they have fertilised?	must I have been fertilising? must you have been fertilising? must he have been fertilising? must we have been fertilising? must you have been fertilising? must they have been fertilising?

Interro-negative form

Simple form	V-ing form
mustn't I fertilise? mustn't you fertilise? mustn't he fertilise? mustn't we fertilise? mustn't you fertilise? mustn't they fertilise?	mustn't I be fertilising? mustn't you be fertilising? mustn't he be fertilising? mustn't we be fertilising? mustn't you be fertilising? mustn't they be fertilising?
Perfect	V-ing perfect
mustn't I have fertilised? mustn't you have fertilised? mustn't he have fertilised? mustn't we have fertilised? mustn't you have fertilised? mustn't they have fertilised?	mustn't I have been fertilising? mustn't you have been fertilising? mustn't he have been fertilising? mustn't we have been fertilising? mustn't you have been fertilising? mustn't they have been fertilising?