words = list(filter(lambda word: len(word) == 12,
                    open('Словарь.txt', encoding="utf8").read().split()))

sorted_words = []
for i in range(len(words)):
    sorted_words.append([''.join(sorted(words[i])), i])

sorted_words.sort()

pairs = []
for i in range(len(sorted_words)):
    for j in range(i + 1, len(sorted_words)):
        if sorted_words[i][0] != sorted_words[j][0]:
            break
        pairs.append([words[sorted_words[i][1]], words[sorted_words[j][1]]])

pairs.sort()
for pair in pairs:
    print(pair[0] + ", " + pair[1])