import csv
import sys
replacements = list(csv.reader(sys.stdin))
your_string = "ten twy fy"
for old, new in replacements:
your_string = your_string.replace(old, new)
print your_string
aW1wb3J0IGNzdgppbXBvcnQgc3lzCgpyZXBsYWNlbWVudHMgPSBsaXN0KGNzdi5yZWFkZXIoc3lzLnN0ZGluKSkKCnlvdXJfc3RyaW5nID0gInRlbiB0d3kgZnkiCmZvciBvbGQsIG5ldyBpbiByZXBsYWNlbWVudHM6CiAgICB5b3VyX3N0cmluZyA9IHlvdXJfc3RyaW5nLnJlcGxhY2Uob2xkLCBuZXcpCnByaW50IHlvdXJfc3RyaW5nCgo=