C111123313121111121111331333133313331323221211113311233132331311   >>    C11112331312111112111133133313331333132322121111331123313233131   <<    C111123313121111121111331333133313331323221211113311233132331313   >>      C111123313121111121111331333133313331323221211113311233132331312   >>