I must preauthorise you must preauthorise she must preauthorise we must preauthorise you must preauthorise they must preauthorise
V-ing form
I must be preauthorising you must be preauthorising she must be preauthorising we must be preauthorising you must be preauthorising they must be preauthorising
Perfect
I must have preauthorised you must have preauthorised she must have preauthorised we must have preauthorised you must have preauthorised they must have preauthorised
V-ing perfect
I must have been preauthorising you must have been preauthorising she must have been preauthorising we must have been preauthorising you must have been preauthorising they must have been preauthorising
Negation
Simple form
I must not preauthorise you must not preauthorise she must not preauthorise we must not preauthorise you must not preauthorise they must not preauthorise
V-ing form
I must not be preauthorising you must not be preauthorising she must not be preauthorising we must not be preauthorising you must not be preauthorising they must not be preauthorising
Perfect
I must not have preauthorised you must not have preauthorised she must not have preauthorised we must not have preauthorised you must not have preauthorised they must not have preauthorised
V-ing perfect
I must not have been preauthorising you must not have been preauthorising she must not have been preauthorising we must not have been preauthorising you must not have been preauthorising they must not have been preauthorising
Interrogative form
Simple form
must I preauthorise? must you preauthorise? must she preauthorise? must we preauthorise? must you preauthorise? must they preauthorise?
V-ing form
must I be preauthorising? must you be preauthorising? must she be preauthorising? must we be preauthorising? must you be preauthorising? must they be preauthorising?
Perfect
must I have preauthorised? must you have preauthorised? must she have preauthorised? must we have preauthorised? must you have preauthorised? must they have preauthorised?
V-ing perfect
must I have been preauthorising? must you have been preauthorising? must she have been preauthorising? must we have been preauthorising? must you have been preauthorising? must they have been preauthorising?
Interro-negative form
Simple form
must I not preauthorise? must you not preauthorise? must she not preauthorise? must we not preauthorise? must you not preauthorise? must they not preauthorise?
V-ing form
must I not be preauthorising? must you not be preauthorising? must she not be preauthorising? must we not be preauthorising? must you not be preauthorising? must they not be preauthorising?
Perfect
must I not have preauthorised? must you not have preauthorised? must she not have preauthorised? must we not have preauthorised? must you not have preauthorised? must they not have preauthorised?
V-ing perfect
must I not have been preauthorising? must you not have been preauthorising? must she not have been preauthorising? must we not have been preauthorising? must you not have been preauthorising? must they not have been preauthorising?