C11112331312111112111133133313331333132322121111331312113313331121111   >>    C1111233131211111211113313331333133313232212111133131211331333112111   <<    C11112331312111112111133133313331333132322121111331312113313331121113   >>      C11112331312111112111133133313331333132322121111331312113313331121112   >>