while(True):
litera,wyraz = input().split()
for i in range(len(wyraz)):
if wyraz[i] == litera:
n = wyraz.replace(wyraz[i],"")
print (n)
d2hpbGUoVHJ1ZSk6CiAgICBsaXRlcmEsd3lyYXogPSBpbnB1dCgpLnNwbGl0KCkKICAgIGZvciBpIGluIHJhbmdlKGxlbih3eXJheikpOgogICAgICAgIGlmIHd5cmF6W2ldID09IGxpdGVyYToKICAgICAgICAgICAgbiA9IHd5cmF6LnJlcGxhY2Uod3lyYXpbaV0sIiIpCiAgICBwcmludCAobikgICA=
ZSBkYWJkY2VhYWFhCmQgYWNlZGFlYWRlYQphIGRjYWJlY2RiZWIKYyBhYmJiZWJlYmVlCmQgYmNiY2NlYmNjYQplIGVkYmVjZWRhZGEKZSBhY2FkZGJhY2JkCmUgY2NiZWVhYmJlYwplIGNiZGViYmNlY2UKZCBjYWJkY2RiYWNl
e dabdceaaaa
d acedaeadea
a dcabecdbeb
c abbbebebee
d bcbccebcca
e edbecedada
e acaddbacbd
e ccbeeabbec
e cbdebbcece
d cabdcdbace