C1111233131211111211113313331333133313331312211111133133313331333132313233121   >>    C111123313121111121111331333133313331333131221111113313331333133313231323312   <<    C1111233131211111211113313331333133313331312211111133133313331333132313233123   >>      C1111233131211111211113313331333133313331312211111133133313331333132313233122   >>