C11112331312111112111133133313331333132322121111331322112313311   >>    C1111233131211111211113313331333133313232212111133132211231331   <<    C11112331312111112111133133313331333132322121111331322112313313   >>      C11112331312111112111133133313331333132322121111331322112313312   >>