English verb conjugation
MUST WHILE

Regular verb: while - whiled - whiled

Affirmation

Simple form	V-ing form
I must while you must while he must while we must while you must while they must while	I must be whiling you must be whiling he must be whiling we must be whiling you must be whiling they must be whiling
Perfect	V-ing perfect
I must have whiled you must have whiled he must have whiled we must have whiled you must have whiled they must have whiled	I must have been whiling you must have been whiling he must have been whiling we must have been whiling you must have been whiling they must have been whiling

Negation

Simple form	V-ing form
I mustn't while you mustn't while he mustn't while we mustn't while you mustn't while they mustn't while	I mustn't be whiling you mustn't be whiling he mustn't be whiling we mustn't be whiling you mustn't be whiling they mustn't be whiling
Perfect	V-ing perfect
I mustn't have whiled you mustn't have whiled he mustn't have whiled we mustn't have whiled you mustn't have whiled they mustn't have whiled	I mustn't have been whiling you mustn't have been whiling he mustn't have been whiling we mustn't have been whiling you mustn't have been whiling they mustn't have been whiling

Interrogative form

Simple form	V-ing form
must I while? must you while? must he while? must we while? must you while? must they while?	must I be whiling? must you be whiling? must he be whiling? must we be whiling? must you be whiling? must they be whiling?
Perfect	V-ing perfect
must I have whiled? must you have whiled? must he have whiled? must we have whiled? must you have whiled? must they have whiled?	must I have been whiling? must you have been whiling? must he have been whiling? must we have been whiling? must you have been whiling? must they have been whiling?

Interro-negative form

Simple form	V-ing form
mustn't I while? mustn't you while? mustn't he while? mustn't we while? mustn't you while? mustn't they while?	mustn't I be whiling? mustn't you be whiling? mustn't he be whiling? mustn't we be whiling? mustn't you be whiling? mustn't they be whiling?
Perfect	V-ing perfect
mustn't I have whiled? mustn't you have whiled? mustn't he have whiled? mustn't we have whiled? mustn't you have whiled? mustn't they have whiled?	mustn't I have been whiling? mustn't you have been whiling? mustn't he have been whiling? mustn't we have been whiling? mustn't you have been whiling? mustn't they have been whiling?