English verb conjugation MUST CAVERN

Regular verb: cavern - caverned - caverned

Affirmation

Simple form

I must cavern
you must cavern
he must cavern
we must cavern
you must cavern
they must cavern

V-ing form

I must be caverning
you must be caverning
he must be caverning
we must be caverning
you must be caverning
they must be caverning

Perfect

I must have caverned
you must have caverned
he must have caverned
we must have caverned
you must have caverned
they must have caverned

V-ing perfect

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

Negation

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

Interrogative form

Simple form

must I cavern?
must you cavern?
must he cavern?
must we cavern?
must you cavern?
must they cavern?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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