C111123313121111121111331323133313331333132333133313121111331333132313221311   >>    C11112331312111112111133132313331333133313233313331312111133133313231322131   <<    C111123313121111121111331323133313331333132333133313121111331333132313221313   >>      C111123313121111121111331323133313331333132333133313121111331333132313221312   >>