C1111233131211111211113313331333133313232321331121111133313132312321   >>    C111123313121111121111331333133313331323232133112111113331313231232   <<    C1111233131211111211113313331333133313232321331121111133313132312323   >>      C1111233131211111211113313331333133313232321331121111133313132312322   >>