C111123313121111121111331333133313331333131221111331333131133132233312232131121   >>    C11112331312111112111133133313331333133313122111133133313113313223331223213112   <<    C111123313121111121111331333133313331333131221111331333131133132233312232131123   >>      C111123313121111121111331333133313331333131221111331333131133132233312232131122   >>