#!/usr/bin/env python3
import re, collections

cons = 'bcdfghjklmnpqrstvwxz'
vow = 'aeiouy'

def rm(clist, excluded):
  return ''.join([c for c in clist if c not in excluded])

def get_names():
  names = collections.Counter()
  for i in range(1880, 2020):
    f = open('yob' + str(i) + '.txt')
    for line in f:
      fields = line.lower().strip().split(',')
      names[fields[0]] += int(fields[2])
  return names

def get_syls(names, regexp):
  syls = [collections.Counter(), collections.Counter()]
  for name in names:
    name_syls = re.findall(regexp, name)
    for i, syl in enumerate(name_syls):
      pos = int(i == 0 and name.startswith(syl))
      syls[pos][syl] += names[name]
  return syls

def results(syls):
  ranked = [[x[0] for x in syls[p].most_common()] for p in range(2)]

  scores = []
  for syl in syls[0]:
    if syl in syls[1]:
      rank = max([ranked[p].index(syl) for p in range(2)])
      scores.append([rank, syl])

  cv = [c+v for c in rm(cons, 'xqzw') for v in vow]
  return cv + [x[1] for x in sorted(scores) if len(x[1])==3][:(256-len(cv))]

names = get_names()

allowed_end = 'nrlc'
allowed_prec = rm(cons, allowed_end)

final = results(get_syls(names,
  '(?:[{0}]|[{2}][{0}]*)[{1}]+(?:[{3}](?=[{4}]|$))?'.format(cons, vow, allowed_prec, allowed_end, rm(cons, 'h'))
))
print(final)