vowel = 'aeiouy'
s = raw_input('s = ')
for i in range(len(s)):
	if vowel.find(s[i]) >= 0:
		s = s.replace(s[i],'0')
	else:
		if s[i] <> '0':
			s = s.replace(s[i],'1')
streak = 1
counter = 0
s += ' '
for i in range(1,len(s)):
	if s[i] == s[i-1]:
		streak += 1
	else:
		counter +=(streak - 1) // 2
		streak = 1
print counter