I must apostrophise you must apostrophise she must apostrophise we must apostrophise you must apostrophise they must apostrophise
V-ing form
I must be apostrophising you must be apostrophising she must be apostrophising we must be apostrophising you must be apostrophising they must be apostrophising
Perfect
I must have apostrophised you must have apostrophised she must have apostrophised we must have apostrophised you must have apostrophised they must have apostrophised
V-ing perfect
I must have been apostrophising you must have been apostrophising she must have been apostrophising we must have been apostrophising you must have been apostrophising they must have been apostrophising
Negation
Simple form
I mustn't apostrophise you mustn't apostrophise she mustn't apostrophise we mustn't apostrophise you mustn't apostrophise they mustn't apostrophise
V-ing form
I mustn't be apostrophising you mustn't be apostrophising she mustn't be apostrophising we mustn't be apostrophising you mustn't be apostrophising they mustn't be apostrophising
Perfect
I mustn't have apostrophised you mustn't have apostrophised she mustn't have apostrophised we mustn't have apostrophised you mustn't have apostrophised they mustn't have apostrophised
V-ing perfect
I mustn't have been apostrophising you mustn't have been apostrophising she mustn't have been apostrophising we mustn't have been apostrophising you mustn't have been apostrophising they mustn't have been apostrophising
Interrogative form
Simple form
must I apostrophise? must you apostrophise? must she apostrophise? must we apostrophise? must you apostrophise? must they apostrophise?
V-ing form
must I be apostrophising? must you be apostrophising? must she be apostrophising? must we be apostrophising? must you be apostrophising? must they be apostrophising?
Perfect
must I have apostrophised? must you have apostrophised? must she have apostrophised? must we have apostrophised? must you have apostrophised? must they have apostrophised?
V-ing perfect
must I have been apostrophising? must you have been apostrophising? must she have been apostrophising? must we have been apostrophising? must you have been apostrophising? must they have been apostrophising?
Interro-negative form
Simple form
mustn't I apostrophise? mustn't you apostrophise? mustn't she apostrophise? mustn't we apostrophise? mustn't you apostrophise? mustn't they apostrophise?
V-ing form
mustn't I be apostrophising? mustn't you be apostrophising? mustn't she be apostrophising? mustn't we be apostrophising? mustn't you be apostrophising? mustn't they be apostrophising?
Perfect
mustn't I have apostrophised? mustn't you have apostrophised? mustn't she have apostrophised? mustn't we have apostrophised? mustn't you have apostrophised? mustn't they have apostrophised?
V-ing perfect
mustn't I have been apostrophising? mustn't you have been apostrophising? mustn't she have been apostrophising? mustn't we have been apostrophising? mustn't you have been apostrophising? mustn't they have been apostrophising?