C11112331312111112111133133313331333132322121111331322112313331   >>    C1111233131211111211113313331333133313232212111133132211231333   <<    C11112331312111112111133133313331333132322121111331322112313333   >>      C11112331312111112111133133313331333132322121111331322112313332   >>