C111123313121111121111331323133313331333132333133313232311212121   >>    C11112331312111112111133132313331333133313233313331323231121212   <<    C111123313121111121111331323133313331333132333133313232311212123   >>      C111123313121111121111331323133313331333132333133313232311212122   >>