1class RunewordsCalculator:
 2    def __init__(self, runeword_recipes):
 3        self.runeword_recipes = dict(runeword_recipes)
 4        self.runes = []
 5
 6    def __iter__(self):
 7        return self
 8
 9    def __next__(self):
10        if not self.runeword_recipes:
11            raise StopIteration
12        for runeword, recipe in self.runeword_recipes.items():
13            runes_iter = iter(self.runes)
14            if all(any(current_rune == needed_rune for current_rune in runes_iter) for needed_rune in recipe):
15                self.runeword_recipes.pop(runeword)
16                return runeword
17
18    def add_runes(self, runes):
19        self.runes.extend(runes)