Find a good command name

newname.py

fingers = [ 'wsx', 'edc', 'rfv', 'tgb', 'yhn', 'ujm', 'ik', 'ol']
vowels = 'aeiyouw'

def pick_all(previous=None):
  for finger in fingers:
    if not previous or previous not in finger:
      yield from finger

_pick_all_cache = {}
def pick_all_cached(previous=None):
  global _pick_all_cache
  if previous in _pick_all_cache:
    return _pick_all_cache[previous]

  result = list(pick_all(previous))
  _pick_all_cache[previous] = result
  return result

def combinations(length, previous=None):
  for ch in pick_all_cached(previous):
    if length == 1:
      yield ch
    else:
      for comb in combinations(length-1, ch):
        yield ch + comb

_combinations_cache = {}
def combinations_cached(length, previous=None):
  global _combinations_cache
  if previous in _combinations_cache:
    return _combinations_cache[(length, previous)]

  result = list(combinations(length, previous))
  _combinations_cache[(length, previous)] = result
  return result

def has_vowel(word):
  for v in vowels:
    if v in word:
      return True
  return False

def only_with_vowels(words):
  for word in words:
    if has_vowel(word):
      yield word

for size in range(3, 5+1):
  combs = combinations(size)
  for comb in only_with_vowels(combs):
    print(comb)