English verb conjugation MUST CHALLENGE

Regular verb: challenge - challenged - challenged

Affirmation

Simple form

I must challenge
you must challenge
she must challenge
we must challenge
you must challenge
they must challenge

V-ing form

I must be challenging
you must be challenging
she must be challenging
we must be challenging
you must be challenging
they must be challenging

Perfect

I must have challenged
you must have challenged
she must have challenged
we must have challenged
you must have challenged
they must have challenged

V-ing perfect

I must have been challenging
you must have been challenging
she must have been challenging
we must have been challenging
you must have been challenging
they must have been challenging

Negation

Simple form

I mustn't challenge
you mustn't challenge
she mustn't challenge
we mustn't challenge
you mustn't challenge
they mustn't challenge

V-ing form

I mustn't be challenging
you mustn't be challenging
she mustn't be challenging
we mustn't be challenging
you mustn't be challenging
they mustn't be challenging

Perfect

I mustn't have challenged
you mustn't have challenged
she mustn't have challenged
we mustn't have challenged
you mustn't have challenged
they mustn't have challenged

V-ing perfect

I mustn't have been challenging
you mustn't have been challenging
she mustn't have been challenging
we mustn't have been challenging
you mustn't have been challenging
they mustn't have been challenging

Interrogative form

Simple form

must I challenge?
must you challenge?
must she challenge?
must we challenge?
must you challenge?
must they challenge?

V-ing form

must I be challenging?
must you be challenging?
must she be challenging?
must we be challenging?
must you be challenging?
must they be challenging?

Perfect

must I have challenged?
must you have challenged?
must she have challenged?
must we have challenged?
must you have challenged?
must they have challenged?

V-ing perfect

must I have been challenging?
must you have been challenging?
must she have been challenging?
must we have been challenging?
must you have been challenging?
must they have been challenging?

Interro-negative form

Simple form

mustn't I challenge?
mustn't you challenge?
mustn't she challenge?
mustn't we challenge?
mustn't you challenge?
mustn't they challenge?

V-ing form

mustn't I be challenging?
mustn't you be challenging?
mustn't she be challenging?
mustn't we be challenging?
mustn't you be challenging?
mustn't they be challenging?

Perfect

mustn't I have challenged?
mustn't you have challenged?
mustn't she have challenged?
mustn't we have challenged?
mustn't you have challenged?
mustn't they have challenged?

V-ing perfect

mustn't I have been challenging?
mustn't you have been challenging?
mustn't she have been challenging?
mustn't we have been challenging?
mustn't you have been challenging?
mustn't they have been challenging?

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