C1111233131211111211113313331333133313331333133313331333133313113221121   >>    C111123313121111121111331333133313331333133313331333133313331311322112   <<    C1111233131211111211113313331333133313331333133313331333133313113221123   >>      C1111233131211111211113313331333133313331333133313331333133313113221122   >>