English verb conjugation
MUST DECARBURISE

Regular verb: decarburise - decarburised - decarburised

Affirmation

Simple form	V-ing form
I must decarburise you must decarburise he must decarburise we must decarburise you must decarburise they must decarburise	I must be decarburising you must be decarburising he must be decarburising we must be decarburising you must be decarburising they must be decarburising
Perfect	V-ing perfect
I must have decarburised you must have decarburised he must have decarburised we must have decarburised you must have decarburised they must have decarburised	I must have been decarburising you must have been decarburising he must have been decarburising we must have been decarburising you must have been decarburising they must have been decarburising

Negation

Simple form	V-ing form
I must not decarburise you must not decarburise he must not decarburise we must not decarburise you must not decarburise they must not decarburise	I must not be decarburising you must not be decarburising he must not be decarburising we must not be decarburising you must not be decarburising they must not be decarburising
Perfect	V-ing perfect
I must not have decarburised you must not have decarburised he must not have decarburised we must not have decarburised you must not have decarburised they must not have decarburised	I must not have been decarburising you must not have been decarburising he must not have been decarburising we must not have been decarburising you must not have been decarburising they must not have been decarburising

Interrogative form

Simple form	V-ing form
must I decarburise? must you decarburise? must he decarburise? must we decarburise? must you decarburise? must they decarburise?	must I be decarburising? must you be decarburising? must he be decarburising? must we be decarburising? must you be decarburising? must they be decarburising?
Perfect	V-ing perfect
must I have decarburised? must you have decarburised? must he have decarburised? must we have decarburised? must you have decarburised? must they have decarburised?	must I have been decarburising? must you have been decarburising? must he have been decarburising? must we have been decarburising? must you have been decarburising? must they have been decarburising?

Interro-negative form

Simple form	V-ing form
must I not decarburise? must you not decarburise? must he not decarburise? must we not decarburise? must you not decarburise? must they not decarburise?	must I not be decarburising? must you not be decarburising? must he not be decarburising? must we not be decarburising? must you not be decarburising? must they not be decarburising?
Perfect	V-ing perfect
must I not have decarburised? must you not have decarburised? must he not have decarburised? must we not have decarburised? must you not have decarburised? must they not have decarburised?	must I not have been decarburising? must you not have been decarburising? must he not have been decarburising? must we not have been decarburising? must you not have been decarburising? must they not have been decarburising?