import urllib, sys, string
from string import maketrans

bbb = 0

f = urllib.urlopen("http://www.pythonchallenge.com/pc/def/equality.html")
while 1:
    buf = f.read(200000)
    if not len(buf):
        break
    for x in range(len(buf)):
        if buf[x] in string.ascii_lowercase:
           if buf[x+1] in string.ascii_uppercase:
               if buf[x-1] in string.ascii_uppercase:
                   if buf[x+2] in string.ascii_uppercase:
                       if buf[x-2] in string.ascii_uppercase:
                           if buf[x+3] in string.ascii_uppercase:
                               if buf[x-3] in string.ascii_uppercase:
                                   if buf[x+4] in string.ascii_lowercase:
                                       if buf[x-4] in string.ascii_lowercase:
                                           bbb = x
    sys.stdout.write(buf)
    print(buf[bbb-3:bbb+4])