C11112331312111112111133133313331333132322121111331322133313231333133313133121   >>    C1111233131211111211113313331333133313232212111133132213331323133313331313312   <<    C11112331312111112111133133313331333132322121111331322133313231333133313133123   >>      C11112331312111112111133133313331333132322121111331322133313231333133313133122   >>