C1111233131211111211113313331333133313331312211111133132313331323213121   >>    C111123313121111121111331333133313331333131221111113313231333132321312   <<    C1111233131211111211113313331333133313331312211111133132313331323213123   >>      C1111233131211111211113313331333133313331312211111133132313331323213122   >>