import string
from itertools import combinations, product

alphabet = string.ascii_lowercase
max_length = 5
file_ = open("combos.txt","w")

def combos(chars=alphabet, max_len=max_length):
    for length in xrange(5, max_length + 1):
        for combo in map(''.join, product(alphabet, repeat=length)):
            yield combo

for combo in combos():
    file_.write(combo + '\n')
    file_.close
    print(combo)