C1111233131211111211113313331333133313331333133313331333133313232132233121   >>    C111123313121111121111331333133313331333133313331333133313331323213223312   <<    C1111233131211111211113313331333133313331333133313331333133313232132233123   >>      C1111233131211111211113313331333133313331333133313331333133313232132233122   >>