import urllib
url = 'http://pythonchallenge.com/pc/def/equality.html'
source = urllib.urlopen(url)
source = source.readlines()

catch, mess = False, ''
for line in source:
    if line == '-->\n':
        catch = False
    if catch == True:
        mess = mess + line
    if line == '<!--\n':
        catch = True

i, l = 0, []
while i < len(mess) - 10:
    if mess[i].islower() and mess[i+1].isupper()  and mess[i+2].isupper()  and mess[i+3].isupper() and mess[i+4].islower()  and mess[i+5].isupper()  and mess[i+6].isupper() and mess[i+7].isupper() and mess[i+8].islower():
        l.append(mess[i+1] + mess[i+2] + mess[i+3] + mess[i+4] + mess[i+5] + mess[i+6] + mess[i+7])
    i += 1

sentence = ''
for item in l:
    sentence = sentence + item[3]

print sentence