C11112331312111112111133133313331322133313112121111331322233231211   >>    C1111233131211111211113313331333132213331311212111133132223323121   <<    C11112331312111112111133133313331322133313112121111331322233231213   >>      C11112331312111112111133133313331322133313112121111331322233231212   >>