#include <iostream>
#include <string>
int main() {
char c;
std::string word;
while (std::cin >> c) {
if ((c >= 'a' && c <= 'z') || (c >= 'A' && c <= 'Z')) {
word.push_back(c);
} else {
std::cout << word << '\n';
word.clear();
}
}
return 0;
}
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