C111123313121111121111331323133313331333132333133313232213311231321   >>    C11112331312111112111133132313331333133313233313331323221331123132   <<    C111123313121111121111331323133313331333132333133313232213311231323   >>      C111123313121111121111331323133313331333132333133313232213311231322   >>