1. All appeals filed by the Defendant (Counterclaim Plaintiff) are dismissed.

2. The appeal cost is borne by the Defendant (Counterclaim Plaintiff).

1. The reasoning of the court's explanation of this case is the same as that of the judgment of the court of first instance, and thus, it is citing this as it is in accordance with the main sentence of Article 420 of the Civil Procedure Act.

2. According to the conclusion, the plaintiffs' principal claim against the defendants, the plaintiff C's principal claim against defendant E, and the counterclaim against the plaintiff defendant D against the plaintiff defendant Eul are justified within the scope of each above recognition, and each of the remaining principal claim and counterclaim are dismissed as they are without merit. The judgment of the court of first instance is just in conclusion, and it is so decided as per Disposition by the defendants' appeal.