anagram

def anagrams(phrase, shortest=2):
	return find_anagrams(phrase.replace(' ',''),'', shortest)

def find_anagrams(letters, previous_word, shortest):
	results = set()
	for w in find_words(letters):
		if len(w) >= shortest and w > previous_word:
			remainder = removed(letters, w)
			if remainder:
				for rest in find_anagrams(remainder, w, shortest):
					results.add(w + '' + rest)
			else:
				results.add(w)
	return results