male gender | Modal : no | may | might | can | could | shall | should | will | would | must | ought to
English verb conjugation MUST FLAG
Regular verb: flag - flagged - flagged
Affirmation
Simple form
I must flagyou must flag
she must flag
we must flag
you must flag
they must flag
V-ing form
I must be flaggingyou must be flagging
she must be flagging
we must be flagging
you must be flagging
they must be flagging
Perfect
I must have flaggedyou must have flagged
she must have flagged
we must have flagged
you must have flagged
they must have flagged
V-ing perfect
I must have been flaggingyou must have been flagging
she must have been flagging
we must have been flagging
you must have been flagging
they must have been flagging
Negation
Simple form
I mustn't flagyou mustn't flag
she mustn't flag
we mustn't flag
you mustn't flag
they mustn't flag
V-ing form
I mustn't be flaggingyou mustn't be flagging
she mustn't be flagging
we mustn't be flagging
you mustn't be flagging
they mustn't be flagging
Perfect
I mustn't have flaggedyou mustn't have flagged
she mustn't have flagged
we mustn't have flagged
you mustn't have flagged
they mustn't have flagged
V-ing perfect
I mustn't have been flaggingyou mustn't have been flagging
she mustn't have been flagging
we mustn't have been flagging
you mustn't have been flagging
they mustn't have been flagging
Interrogative form
Simple form
must I flag?must you flag?
must she flag?
must we flag?
must you flag?
must they flag?
V-ing form
must I be flagging?must you be flagging?
must she be flagging?
must we be flagging?
must you be flagging?
must they be flagging?
Perfect
must I have flagged?must you have flagged?
must she have flagged?
must we have flagged?
must you have flagged?
must they have flagged?
V-ing perfect
must I have been flagging?must you have been flagging?
must she have been flagging?
must we have been flagging?
must you have been flagging?
must they have been flagging?
Interro-negative form
Simple form
mustn't I flag?mustn't you flag?
mustn't she flag?
mustn't we flag?
mustn't you flag?
mustn't they flag?
V-ing form
mustn't I be flagging?mustn't you be flagging?
mustn't she be flagging?
mustn't we be flagging?
mustn't you be flagging?
mustn't they be flagging?
Perfect
mustn't I have flagged?mustn't you have flagged?
mustn't she have flagged?
mustn't we have flagged?
mustn't you have flagged?
mustn't they have flagged?
V-ing perfect
mustn't I have been flagging?mustn't you have been flagging?
mustn't she have been flagging?
mustn't we have been flagging?
mustn't you have been flagging?
mustn't they have been flagging?