如何编写匹配字形的函数并将其放入列表中？

def match_word_shape(word1, word2):
    if len(word1) != len(word2):
        return False
    
    mapping = {}
    for i in range(len(word1)):
        char1 = word1[i]
        char2 = word2[i]
        
        if char1 in mapping:
            if mapping[char1] != char2:
                return False
        else:
            mapping[char1] = char2
    
    return True

def find_matching_words(word_list):
    result = []
    
    for i in range(len(word_list)):
        for j in range(i+1, len(word_list)):
            if match_word_shape(word_list[i], word_list[j]):
                result.append(word_list[i])
                result.append(word_list[j])
    
    return result

# 测试示例
words = ["egg", "add", "foo", "bar", "abb", "xyz"]
matching_words = find_matching_words(words)
print(matching_words)