C1111233133313231133133313331333133311221123121111331333131121323321   >>    C111123313331323113313331333133313331122112312111133133313112132332   <<    C1111233133313231133133313331333133311221123121111331333131121323323   >>      C1111233133313231133133313331333133311221123121111331333131121323322   >>