C1111233131211111211113313331333133313331312211113313331311331333132311223221   >>    C111123313121111121111331333133313331333131221111331333131133133313231122322   <<    C1111233131211111211113313331333133313331312211113313331311331333132311223223   >>      C1111233131211111211113313331333133313331312211113313331311331333132311223222   >>