I must apostrophise you must apostrophise he must apostrophise we must apostrophise you must apostrophise they must apostrophise
V-ing form
I must be apostrophising you must be apostrophising he must be apostrophising we must be apostrophising you must be apostrophising they must be apostrophising
Perfect
I must have apostrophised you must have apostrophised he 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 he must have been apostrophising we must have been apostrophising you must have been apostrophising they must have been apostrophising
Negation
Simple form
I must not apostrophise you must not apostrophise he must not apostrophise we must not apostrophise you must not apostrophise they must not apostrophise
V-ing form
I must not be apostrophising you must not be apostrophising he must not be apostrophising we must not be apostrophising you must not be apostrophising they must not be apostrophising
Perfect
I must not have apostrophised you must not have apostrophised he must not have apostrophised we must not have apostrophised you must not have apostrophised they must not have apostrophised
V-ing perfect
I must not have been apostrophising you must not have been apostrophising he must not have been apostrophising we must not have been apostrophising you must not have been apostrophising they must not have been apostrophising
Interrogative form
Simple form
must I apostrophise? must you apostrophise? must he apostrophise? must we apostrophise? must you apostrophise? must they apostrophise?
V-ing form
must I be apostrophising? must you be apostrophising? must he be apostrophising? must we be apostrophising? must you be apostrophising? must they be apostrophising?
Perfect
must I have apostrophised? must you have apostrophised? must he 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 he have been apostrophising? must we have been apostrophising? must you have been apostrophising? must they have been apostrophising?
Interro-negative form
Simple form
must I not apostrophise? must you not apostrophise? must he not apostrophise? must we not apostrophise? must you not apostrophise? must they not apostrophise?
V-ing form
must I not be apostrophising? must you not be apostrophising? must he not be apostrophising? must we not be apostrophising? must you not be apostrophising? must they not be apostrophising?
Perfect
must I not have apostrophised? must you not have apostrophised? must he not have apostrophised? must we not have apostrophised? must you not have apostrophised? must they not have apostrophised?
V-ing perfect
must I not have been apostrophising? must you not have been apostrophising? must he not have been apostrophising? must we not have been apostrophising? must you not have been apostrophising? must they not have been apostrophising?