The third conditional

неверно

верно

might

could

would

да

нет

could

would

might

If they waited, we could have eaten together

If they had waited, we could have eaten together

   If they would have waited, we would have eaten together.

If they had waited, we would eat together

Had born, what you would have done

Were been, what have you done

    Would have been born, what had you done

Had been born, what would you have done

  Had bought, would have been

Would had bought, was

Would have bought, had been

Would buy, had been

The plants would have grown more if there had been more light.

The plants would grow more if there were more light.

The plants would have grown more if there would be more light.

The plants grows more if there would be more light.

верно

неверно

   would have studied, had moved

studied, would have moved

had studied, would have moved

had studied, had moved