C111123313121111121111331333133313331322121111331333133313331311331333132112121   >>    C11112331312111112111133133313331333132212111133133313331333131133133313211212   <<    C111123313121111121111331333133313331322121111331333133313331311331333132112123   >>      C111123313121111121111331333133313331322121111331333133313331311331333132112122   >>