C111123313121111121111331333133313331323221211113311233132313221211   >>    C11112331312111112111133133313331333132322121111331123313231322121   <<    C111123313121111121111331333133313331323221211113311233132313221213   >>      C111123313121111121111331333133313331323221211113311233132313221212   >>