C111123313121111121111331333132313331323133313331211111333132322312121   >>    C11112331312111112111133133313231333132313331333121111133313232231212   <<    C111123313121111121111331333132313331323133313331211111333132322312123   >>      C111123313121111121111331333132313331323133313331211111333132322312122   >>