C1111233131211111211113313331333133313311211111333133313331333133313232231111   >>    C111123313121111121111331333133313331331121111133313331333133313331323223111   <<    C1111233131211111211113313331333133313311211111333133313331333133313232231113   >>      C1111233131211111211113313331333133313311211111333133313331333133313232231112   >>