English verb conjugation MUST CROAK

Regular verb: croak - croaked - croaked

Affirmation

Simple form

I must croak
you must croak
he must croak
we must croak
you must croak
they must croak

V-ing form

I must be croaking
you must be croaking
he must be croaking
we must be croaking
you must be croaking
they must be croaking

Perfect

I must have croaked
you must have croaked
he must have croaked
we must have croaked
you must have croaked
they must have croaked

V-ing perfect

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

Negation

Simple form

I must not croak
you must not croak
he must not croak
we must not croak
you must not croak
they must not croak

V-ing form

I must not be croaking
you must not be croaking
he must not be croaking
we must not be croaking
you must not be croaking
they must not be croaking

Perfect

I must not have croaked
you must not have croaked
he must not have croaked
we must not have croaked
you must not have croaked
they must not have croaked

V-ing perfect

I must not have been croaking
you must not have been croaking
he must not have been croaking
we must not have been croaking
you must not have been croaking
they must not have been croaking

Interrogative form

Simple form

must I croak?
must you croak?
must he croak?
must we croak?
must you croak?
must they croak?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

must I not croak?
must you not croak?
must he not croak?
must we not croak?
must you not croak?
must they not croak?

V-ing form

must I not be croaking?
must you not be croaking?
must he not be croaking?
must we not be croaking?
must you not be croaking?
must they not be croaking?

Perfect

must I not have croaked?
must you not have croaked?
must he not have croaked?
must we not have croaked?
must you not have croaked?
must they not have croaked?

V-ing perfect

must I not have been croaking?
must you not have been croaking?
must he not have been croaking?
must we not have been croaking?
must you not have been croaking?
must they not have been croaking?

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