Given a list of millions of words, design an algorithm to create the largest possible rectangle of letters such that every row forms a word (reading left to right) and every column forms a word (reading top to bottom). The words need not be chosen consecutively from the list but all rows must be the same length and all columns must be the same height.
\r\n\r\nIf there are more than one answer, return any one of them. A word can be used more than once.
\r\n\r\nExample 1:
\r\n\r\n\r\nInput:\r\n\r\n["this", "real", "hard", "trh", "hea", "iar", "sld"]\r\nOutput:\r\n[\r\n "this",\r\n "real",\r\n "hard"\r\n]
Example 2:
\r\n\r\n\r\nInput: ["aa"]\r\nOutput: ["aa","aa"]\r\n\r\nNotes:
\r\n\r\nwords.length <= 1000words[i].length <= 100给定一份单词的清单，设计一个算法，创建由字母组成的面积最大的矩形，其中每一行组成一个单词(自左向右)，每一列也组成一个单词(自上而下)。不要求这些单词在清单里连续出现，但要求所有行等长，所有列等高。
\n\n如果有多个面积最大的矩形，输出任意一个均可。一个单词可以重复使用。
\n\n示例 1:
\n\n输入:\n\n["this", "real", "hard", "trh", "hea", "iar", "sld"]\n输出:\n[\n "this",\n "real",\n "hard"\n]
示例 2:
\n\n输入: ["aa"]\n输出: ["aa","aa"]\n\n说明：
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