C1111233131211111211113313331333133313331333133313331333133313232132131   >>    C111123313121111121111331333133313331333133313331333133313331323213213   <<    C1111233131211111211113313331333133313331333133313331333133313232132133   >>      C1111233131211111211113313331333133313331333133313331333133313232132132   >>