Each Chinese character in the four idioms of "there is nothing but its appearance", "the appearance and the inside are the same", "it is like old times at first sight", and "deliberately making mysteries" represents one of 11 non-zero continuous natural numbers, the same Chinese characters represent the same number, and different Chinese characters represent different numbers, and "Table" > "One" > "Gu" > "Ru" > "Xu", and the sum of the numbers represented by the four Chinese characters in each idiom is 21. Then what is the largest number that "Nong" can represent?
"虚有其表"，"表里如一"，"一见如故"，"故弄玄虚"四个成语中每个汉字代表11个非零连续自然数中的一个，相同的汉字代表相同的数，不同的汉字代表不同的数，且"表"＞"一"＞"故"＞"如"＞"虚"，且各个成语中四个汉字所代表的数的和都是21．则"弄"可以代表的数最大是多少？
<result>9</result>