1: Gk(_)(_)(15)2: foQ҂̉(30)3: ()4: (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): (): ()