English verb conjugation
MUST SULFURISE

Regular verb: sulfurise - sulfurised - sulfurised

Affirmation

Simple form	V-ing form
I must sulfurise you must sulfurise she must sulfurise we must sulfurise you must sulfurise they must sulfurise	I must be sulfurising you must be sulfurising she must be sulfurising we must be sulfurising you must be sulfurising they must be sulfurising
Perfect	V-ing perfect
I must have sulfurised you must have sulfurised she must have sulfurised we must have sulfurised you must have sulfurised they must have sulfurised	I must have been sulfurising you must have been sulfurising she must have been sulfurising we must have been sulfurising you must have been sulfurising they must have been sulfurising

Negation

Simple form	V-ing form
I mustn't sulfurise you mustn't sulfurise she mustn't sulfurise we mustn't sulfurise you mustn't sulfurise they mustn't sulfurise	I mustn't be sulfurising you mustn't be sulfurising she mustn't be sulfurising we mustn't be sulfurising you mustn't be sulfurising they mustn't be sulfurising
Perfect	V-ing perfect
I mustn't have sulfurised you mustn't have sulfurised she mustn't have sulfurised we mustn't have sulfurised you mustn't have sulfurised they mustn't have sulfurised	I mustn't have been sulfurising you mustn't have been sulfurising she mustn't have been sulfurising we mustn't have been sulfurising you mustn't have been sulfurising they mustn't have been sulfurising

Interrogative form

Simple form	V-ing form
must I sulfurise? must you sulfurise? must she sulfurise? must we sulfurise? must you sulfurise? must they sulfurise?	must I be sulfurising? must you be sulfurising? must she be sulfurising? must we be sulfurising? must you be sulfurising? must they be sulfurising?
Perfect	V-ing perfect
must I have sulfurised? must you have sulfurised? must she have sulfurised? must we have sulfurised? must you have sulfurised? must they have sulfurised?	must I have been sulfurising? must you have been sulfurising? must she have been sulfurising? must we have been sulfurising? must you have been sulfurising? must they have been sulfurising?

Interro-negative form

Simple form	V-ing form
mustn't I sulfurise? mustn't you sulfurise? mustn't she sulfurise? mustn't we sulfurise? mustn't you sulfurise? mustn't they sulfurise?	mustn't I be sulfurising? mustn't you be sulfurising? mustn't she be sulfurising? mustn't we be sulfurising? mustn't you be sulfurising? mustn't they be sulfurising?
Perfect	V-ing perfect
mustn't I have sulfurised? mustn't you have sulfurised? mustn't she have sulfurised? mustn't we have sulfurised? mustn't you have sulfurised? mustn't they have sulfurised?	mustn't I have been sulfurising? mustn't you have been sulfurising? mustn't she have been sulfurising? mustn't we have been sulfurising? mustn't you have been sulfurising? mustn't they have been sulfurising?