English verb conjugation
MUST DECARBONISE

Regular verb: decarbonise - decarbonised - decarbonised

Affirmation

Simple form	V-ing form
I must decarbonise you must decarbonise he must decarbonise we must decarbonise you must decarbonise they must decarbonise	I must be decarbonising you must be decarbonising he must be decarbonising we must be decarbonising you must be decarbonising they must be decarbonising
Perfect	V-ing perfect
I must have decarbonised you must have decarbonised he must have decarbonised we must have decarbonised you must have decarbonised they must have decarbonised	I must have been decarbonising you must have been decarbonising he must have been decarbonising we must have been decarbonising you must have been decarbonising they must have been decarbonising

Negation

Simple form	V-ing form
I mustn't decarbonise you mustn't decarbonise he mustn't decarbonise we mustn't decarbonise you mustn't decarbonise they mustn't decarbonise	I mustn't be decarbonising you mustn't be decarbonising he mustn't be decarbonising we mustn't be decarbonising you mustn't be decarbonising they mustn't be decarbonising
Perfect	V-ing perfect
I mustn't have decarbonised you mustn't have decarbonised he mustn't have decarbonised we mustn't have decarbonised you mustn't have decarbonised they mustn't have decarbonised	I mustn't have been decarbonising you mustn't have been decarbonising he mustn't have been decarbonising we mustn't have been decarbonising you mustn't have been decarbonising they mustn't have been decarbonising

Interrogative form

Simple form	V-ing form
must I decarbonise? must you decarbonise? must he decarbonise? must we decarbonise? must you decarbonise? must they decarbonise?	must I be decarbonising? must you be decarbonising? must he be decarbonising? must we be decarbonising? must you be decarbonising? must they be decarbonising?
Perfect	V-ing perfect
must I have decarbonised? must you have decarbonised? must he have decarbonised? must we have decarbonised? must you have decarbonised? must they have decarbonised?	must I have been decarbonising? must you have been decarbonising? must he have been decarbonising? must we have been decarbonising? must you have been decarbonising? must they have been decarbonising?

Interro-negative form

Simple form	V-ing form
mustn't I decarbonise? mustn't you decarbonise? mustn't he decarbonise? mustn't we decarbonise? mustn't you decarbonise? mustn't they decarbonise?	mustn't I be decarbonising? mustn't you be decarbonising? mustn't he be decarbonising? mustn't we be decarbonising? mustn't you be decarbonising? mustn't they be decarbonising?
Perfect	V-ing perfect
mustn't I have decarbonised? mustn't you have decarbonised? mustn't he have decarbonised? mustn't we have decarbonised? mustn't you have decarbonised? mustn't they have decarbonised?	mustn't I have been decarbonising? mustn't you have been decarbonising? mustn't he have been decarbonising? mustn't we have been decarbonising? mustn't you have been decarbonising? mustn't they have been decarbonising?