C312312111111331312111133133313331322331333133313331323331323113233231   >>    C31231211111133131211113313331333132233133313331333132333132311323323   <<    C312312111111331312111133133313331322331333133313331323331323113233233   >>      C312312111111331312111133133313331322331333133313331323331323113233232   >>