English verb conjugation MUST FOUNDER

Regular verb: founder - foundered - foundered

Affirmation

Simple form

I must founder
you must founder
he must founder
we must founder
you must founder
they must founder

V-ing form

I must be foundering
you must be foundering
he must be foundering
we must be foundering
you must be foundering
they must be foundering

Perfect

I must have foundered
you must have foundered
he must have foundered
we must have foundered
you must have foundered
they must have foundered

V-ing perfect

I must have been foundering
you must have been foundering
he must have been foundering
we must have been foundering
you must have been foundering
they must have been foundering

Negation

Simple form

I mustn't founder
you mustn't founder
he mustn't founder
we mustn't founder
you mustn't founder
they mustn't founder

V-ing form

I mustn't be foundering
you mustn't be foundering
he mustn't be foundering
we mustn't be foundering
you mustn't be foundering
they mustn't be foundering

Perfect

I mustn't have foundered
you mustn't have foundered
he mustn't have foundered
we mustn't have foundered
you mustn't have foundered
they mustn't have foundered

V-ing perfect

I mustn't have been foundering
you mustn't have been foundering
he mustn't have been foundering
we mustn't have been foundering
you mustn't have been foundering
they mustn't have been foundering

Interrogative form

Simple form

must I founder?
must you founder?
must he founder?
must we founder?
must you founder?
must they founder?

V-ing form

must I be foundering?
must you be foundering?
must he be foundering?
must we be foundering?
must you be foundering?
must they be foundering?

Perfect

must I have foundered?
must you have foundered?
must he have foundered?
must we have foundered?
must you have foundered?
must they have foundered?

V-ing perfect

must I have been foundering?
must you have been foundering?
must he have been foundering?
must we have been foundering?
must you have been foundering?
must they have been foundering?

Interro-negative form

Simple form

mustn't I founder?
mustn't you founder?
mustn't he founder?
mustn't we founder?
mustn't you founder?
mustn't they founder?

V-ing form

mustn't I be foundering?
mustn't you be foundering?
mustn't he be foundering?
mustn't we be foundering?
mustn't you be foundering?
mustn't they be foundering?

Perfect

mustn't I have foundered?
mustn't you have foundered?
mustn't he have foundered?
mustn't we have foundered?
mustn't you have foundered?
mustn't they have foundered?

V-ing perfect

mustn't I have been foundering?
mustn't you have been foundering?
mustn't he have been foundering?
mustn't we have been foundering?
mustn't you have been foundering?
mustn't they have been foundering?

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