English verb conjugation COULD CROAK

Regular verb: croak - croaked - croaked

Affirmation

Simple form

I could croak
you could croak
he could croak
we could croak
you could croak
they could croak

V-ing form

I could be croaking
you could be croaking
he could be croaking
we could be croaking
you could be croaking
they could be croaking

Perfect

I could have croaked
you could have croaked
he could have croaked
we could have croaked
you could have croaked
they could have croaked

V-ing perfect

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

Negation

Simple form

I couldn't croak
you couldn't croak
he couldn't croak
we couldn't croak
you couldn't croak
they couldn't croak

V-ing form

I couldn't be croaking
you couldn't be croaking
he couldn't be croaking
we couldn't be croaking
you couldn't be croaking
they couldn't be croaking

Perfect

I couldn't have croaked
you couldn't have croaked
he couldn't have croaked
we couldn't have croaked
you couldn't have croaked
they couldn't have croaked

V-ing perfect

I couldn't have been croaking
you couldn't have been croaking
he couldn't have been croaking
we couldn't have been croaking
you couldn't have been croaking
they couldn't have been croaking

Interrogative form

Simple form

could I croak?
could you croak?
could he croak?
could we croak?
could you croak?
could they croak?

V-ing form

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

Perfect

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

V-ing perfect

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

Interro-negative form

Simple form

couldn't I croak?
couldn't you croak?
couldn't he croak?
couldn't we croak?
couldn't you croak?
couldn't they croak?

V-ing form

couldn't I be croaking?
couldn't you be croaking?
couldn't he be croaking?
couldn't we be croaking?
couldn't you be croaking?
couldn't they be croaking?

Perfect

couldn't I have croaked?
couldn't you have croaked?
couldn't he have croaked?
couldn't we have croaked?
couldn't you have croaked?
couldn't they have croaked?

V-ing perfect

couldn't I have been croaking?
couldn't you have been croaking?
couldn't he have been croaking?
couldn't we have been croaking?
couldn't you have been croaking?
couldn't they have been croaking?

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