vowels = ['a', 'e', 'i', 'y', 'u', 'w', "o"]
n = len(vowels)
res = []
for x1 in vowels:
for x2 in vowels:
res.append('p'+x1+'nk'+' '+'p'+x2)
for x3 in vowels:
res.append('p'+x1+'nk'+x2+' '+'p'+x3)
res.append('p'+x1+'nk'+' '+'p'+x2+x3)
for x4 in vowels:
res.append('p'+x1+'nk'+x2+x3+' '+'p'+x4)
res.append('p'+x1+'nk'+x2+' '+'p'+x3+x4)
for x5 in vowels:
res.append('p'+x1+'nk'+x2+x3+' '+'p'+x4+x5)
print res