C1111233131211111211113313331333133313232321333133313331311233121323331   >>    C111123313121111121111331333133313331323232133313331333131123312132333   <<    C1111233131211111211113313331333133313232321333133313331311233121323333   >>      C1111233131211111211113313331333133313232321333133313331311233121323332   >>