C111123313121111121111331333133313331322121111331333133313331311331333132222121   >>    C11112331312111112111133133313331333132212111133133313331333131133133313222212   <<    C111123313121111121111331333133313331322121111331333133313331311331333132222123   >>      C111123313121111121111331333133313331322121111331333133313331311331333132222122   >>