C1111233131211111211113313331333133313331333133313331333133313113313111123131   >>    C111123313121111121111331333133313331333133313331333133313331311331311112313   <<    C1111233131211111211113313331333133313331333133313331333133313113313111123133   >>      C1111233131211111211113313331333133313331333133313331333133313113313111123132   >>