C1111233131211111211113313331333133313331312211113313331311331322211331   >>    C111123313121111121111331333133313331333131221111331333131133132221133   <<    C1111233131211111211113313331333133313331312211113313331311331322211333   >>      C1111233131211111211113313331333133313331312211113313331311331322211332   >>