#!/usr/bin/python

import re,hashlib,random

from itertools import cycle,imap

a='BCDFGHJKMPQRTVWXY2346789'

b=random.sample(a,12)

print'-'.join(re.compile("(.{5})").findall(''.join(list(x.next()for x in cycle(imap(iter,[[a[int(c,16)]for c in hashlib.sha256(''.join(b)).hexdigest()[-13:]],b]))))))