import nltk 
entries = nltk.corpus.cmudict.entries()

def stress(pron):
    return [char for phone in pron for char in phone if char.isdigit()]

print [w for w,pron in entries if stress(pron)==['0','1','0','2','0']]

print [w for w,pron in entries if stress(pron)==['0','2','0','1','0']]
