English verb conjugation
MUST PREAPPOINT

Regular verb: preappoint - preappointed - preappointed

Affirmation

Simple form	V-ing form
I must preappoint you must preappoint he must preappoint we must preappoint you must preappoint they must preappoint	I must be preappointing you must be preappointing he must be preappointing we must be preappointing you must be preappointing they must be preappointing
Perfect	V-ing perfect
I must have preappointed you must have preappointed he must have preappointed we must have preappointed you must have preappointed they must have preappointed	I must have been preappointing you must have been preappointing he must have been preappointing we must have been preappointing you must have been preappointing they must have been preappointing

Negation

Simple form	V-ing form
I mustn't preappoint you mustn't preappoint he mustn't preappoint we mustn't preappoint you mustn't preappoint they mustn't preappoint	I mustn't be preappointing you mustn't be preappointing he mustn't be preappointing we mustn't be preappointing you mustn't be preappointing they mustn't be preappointing
Perfect	V-ing perfect
I mustn't have preappointed you mustn't have preappointed he mustn't have preappointed we mustn't have preappointed you mustn't have preappointed they mustn't have preappointed	I mustn't have been preappointing you mustn't have been preappointing he mustn't have been preappointing we mustn't have been preappointing you mustn't have been preappointing they mustn't have been preappointing

Interrogative form

Simple form	V-ing form
must I preappoint? must you preappoint? must he preappoint? must we preappoint? must you preappoint? must they preappoint?	must I be preappointing? must you be preappointing? must he be preappointing? must we be preappointing? must you be preappointing? must they be preappointing?
Perfect	V-ing perfect
must I have preappointed? must you have preappointed? must he have preappointed? must we have preappointed? must you have preappointed? must they have preappointed?	must I have been preappointing? must you have been preappointing? must he have been preappointing? must we have been preappointing? must you have been preappointing? must they have been preappointing?

Interro-negative form

Simple form	V-ing form
mustn't I preappoint? mustn't you preappoint? mustn't he preappoint? mustn't we preappoint? mustn't you preappoint? mustn't they preappoint?	mustn't I be preappointing? mustn't you be preappointing? mustn't he be preappointing? mustn't we be preappointing? mustn't you be preappointing? mustn't they be preappointing?
Perfect	V-ing perfect
mustn't I have preappointed? mustn't you have preappointed? mustn't he have preappointed? mustn't we have preappointed? mustn't you have preappointed? mustn't they have preappointed?	mustn't I have been preappointing? mustn't you have been preappointing? mustn't he have been preappointing? mustn't we have been preappointing? mustn't you have been preappointing? mustn't they have been preappointing?