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 must not decarbonise you must not decarbonise he must not decarbonise we must not decarbonise you must not decarbonise they must not decarbonise	I must not be decarbonising you must not be decarbonising he must not be decarbonising we must not be decarbonising you must not be decarbonising they must not be decarbonising
Perfect	V-ing perfect
I must not have decarbonised you must not have decarbonised he must not have decarbonised we must not have decarbonised you must not have decarbonised they must not have decarbonised	I must not have been decarbonising you must not have been decarbonising he must not have been decarbonising we must not have been decarbonising you must not have been decarbonising they must not 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
must I not decarbonise? must you not decarbonise? must he not decarbonise? must we not decarbonise? must you not decarbonise? must they not decarbonise?	must I not be decarbonising? must you not be decarbonising? must he not be decarbonising? must we not be decarbonising? must you not be decarbonising? must they not be decarbonising?
Perfect	V-ing perfect
must I not have decarbonised? must you not have decarbonised? must he not have decarbonised? must we not have decarbonised? must you not have decarbonised? must they not have decarbonised?	must I not have been decarbonising? must you not have been decarbonising? must he not have been decarbonising? must we not have been decarbonising? must you not have been decarbonising? must they not have been decarbonising?