C1111233131211111211113313331333133313331333133313331333133313113213311321   >>    C111123313121111121111331333133313331333133313331333133313331311321331132   <<    C1111233131211111211113313331333133313331333133313331333133313113213311323   >>      C1111233131211111211113313331333133313331333133313331333133313113213311322   >>