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g = {'А', 'Е', 'Ё', 'И', 'У', 'О', 'Я', 'Ы', 'Э', 'Ю'}
s = input().split()
last = -1
start = -1
first = 0
f = 0
GL = 0
gl = 0
cnt = 0
el = s[0]
if len(s) == 1:
el = s[0]
for i in range(len(el)):
if el[i].isupper() and el[i] not in g:
print('ошибка')
exit()
if el[i].isupper() and f:
print('ошибка')
exit()
if el[i].upper() in g:
gl += 1
GL += 1
if el[i].isupper():
start = gl
f = 1
if gl and not f:
print('ошибка')
exit()
if start == -1:
print('не стихи')
exit()
if (start == 2 and gl == 3) \
or (start == 1 and gl == 2) \
or (start == 2 and gl == 2):
print('недостаточно информации')
exit()
last = -1
start = -1
first = 0
GL = 0
f = 0
gl = 0
cnt = 0
el = s[0]
while start == -1 and first < len(s):
el = s[first]
first += 1
for i in range(len(el)):
if el[i].isupper() and el[i] not in g:
print('ошибка')
exit()
if el[i].isupper() and f:
print('ошибка')
exit()
if el[i].upper() in g:
gl += 1
GL += 1
if el[i].isupper():
start = gl
gl = 0
f = 1
if gl and not f:
print('ошибка')
exit()
if start == -1:
print('не стихи')
exit()
cnt = gl
for k in range(first, len(s)):
el = s[k]
f = 0
gl = 0
cnt = cnt
for i in range(len(el)):
if el[i].upper() in g:
cnt += 1
gl += 1
GL += 1
if el[i].isupper() and el[i] not in g:
print('ошибка')
exit()
if el[i].isupper() and f:
print('ошибка')
exit()
if el[i].isupper():
if last == -1:
last = cnt
cnt = 0
elif cnt != last:
print('не стихи')
exit()
else:
cnt = 0
f = 1
if gl and not f:
print('ошибка')
exit()
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