English verb conjugation CAN CROAK

Regular verb: croak - croaked - croaked

Affirmation

Simple form

I can croak
you can croak
he can croak
we can croak
you can croak
they can croak

V-ing form

I can be croaking
you can be croaking
he can be croaking
we can be croaking
you can be croaking
they can be croaking

Perfect

I can have croaked
you can have croaked
he can have croaked
we can have croaked
you can have croaked
they can have croaked

V-ing perfect

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

Negation

Simple form

I cannot croak
you cannot croak
he cannot croak
we cannot croak
you cannot croak
they cannot croak

V-ing form

I cannot be croaking
you cannot be croaking
he cannot be croaking
we cannot be croaking
you cannot be croaking
they cannot be croaking

Perfect

I cannot have croaked
you cannot have croaked
he cannot have croaked
we cannot have croaked
you cannot have croaked
they cannot have croaked

V-ing perfect

I cannot have been croaking
you cannot have been croaking
he cannot have been croaking
we cannot have been croaking
you cannot have been croaking
they cannot have been croaking

Interrogative form

Simple form

can I croak?
can you croak?
can he croak?
can we croak?
can you croak?
can they croak?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

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

V-ing form

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

Perfect

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

V-ing perfect

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

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