English verb conjugation
MUST DEMATERIALISE

Regular verb: dematerialise - dematerialised - dematerialised

Affirmation

Simple form	V-ing form
I must dematerialise you must dematerialise he must dematerialise we must dematerialise you must dematerialise they must dematerialise	I must be dematerialising you must be dematerialising he must be dematerialising we must be dematerialising you must be dematerialising they must be dematerialising
Perfect	V-ing perfect
I must have dematerialised you must have dematerialised he must have dematerialised we must have dematerialised you must have dematerialised they must have dematerialised	I must have been dematerialising you must have been dematerialising he must have been dematerialising we must have been dematerialising you must have been dematerialising they must have been dematerialising

Negation

Simple form	V-ing form
I mustn't dematerialise you mustn't dematerialise he mustn't dematerialise we mustn't dematerialise you mustn't dematerialise they mustn't dematerialise	I mustn't be dematerialising you mustn't be dematerialising he mustn't be dematerialising we mustn't be dematerialising you mustn't be dematerialising they mustn't be dematerialising
Perfect	V-ing perfect
I mustn't have dematerialised you mustn't have dematerialised he mustn't have dematerialised we mustn't have dematerialised you mustn't have dematerialised they mustn't have dematerialised	I mustn't have been dematerialising you mustn't have been dematerialising he mustn't have been dematerialising we mustn't have been dematerialising you mustn't have been dematerialising they mustn't have been dematerialising

Interrogative form

Simple form	V-ing form
must I dematerialise? must you dematerialise? must he dematerialise? must we dematerialise? must you dematerialise? must they dematerialise?	must I be dematerialising? must you be dematerialising? must he be dematerialising? must we be dematerialising? must you be dematerialising? must they be dematerialising?
Perfect	V-ing perfect
must I have dematerialised? must you have dematerialised? must he have dematerialised? must we have dematerialised? must you have dematerialised? must they have dematerialised?	must I have been dematerialising? must you have been dematerialising? must he have been dematerialising? must we have been dematerialising? must you have been dematerialising? must they have been dematerialising?

Interro-negative form

Simple form	V-ing form
mustn't I dematerialise? mustn't you dematerialise? mustn't he dematerialise? mustn't we dematerialise? mustn't you dematerialise? mustn't they dematerialise?	mustn't I be dematerialising? mustn't you be dematerialising? mustn't he be dematerialising? mustn't we be dematerialising? mustn't you be dematerialising? mustn't they be dematerialising?
Perfect	V-ing perfect
mustn't I have dematerialised? mustn't you have dematerialised? mustn't he have dematerialised? mustn't we have dematerialised? mustn't you have dematerialised? mustn't they have dematerialised?	mustn't I have been dematerialising? mustn't you have been dematerialising? mustn't he have been dematerialising? mustn't we have been dematerialising? mustn't you have been dematerialising? mustn't they have been dematerialising?