C11112331312111112111133133313331333132322121111331322133313231333132313331211   >>    C1111233131211111211113313331333133313232212111133132213331323133313231333121   <<    C11112331312111112111133133313331333132322121111331322133313231333132313331213   >>      C11112331312111112111133133313331333132322121111331322133313231333132313331212   >>