C111123313121111121111331333133313331322121111331333133313331323223313113313321   >>    C11112331312111112111133133313331333132212111133133313331333132322331311331332   <<    C111123313121111121111331333133313331322121111331333133313331323223313113313323   >>      C111123313121111121111331333133313331322121111331333133313331323223313113313322   >>