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 must not while you must not while he must not while we must not while you must not while they must not while	I must not be whiling you must not be whiling he must not be whiling we must not be whiling you must not be whiling they must not be whiling
Perfect	V-ing perfect
I must not have whiled you must not have whiled he must not have whiled we must not have whiled you must not have whiled they must not have whiled	I must not have been whiling you must not have been whiling he must not have been whiling we must not have been whiling you must not have been whiling they must not 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
must I not while? must you not while? must he not while? must we not while? must you not while? must they not while?	must I not be whiling? must you not be whiling? must he not be whiling? must we not be whiling? must you not be whiling? must they not be whiling?
Perfect	V-ing perfect
must I not have whiled? must you not have whiled? must he not have whiled? must we not have whiled? must you not have whiled? must they not have whiled?	must I not have been whiling? must you not have been whiling? must he not have been whiling? must we not have been whiling? must you not have been whiling? must they not have been whiling?