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/*
normalize prefix
*/
#include <string>
#include <set>
#include <iostream>
#include <memory.h>
typedef unsigned char uint8;
std::string normalize(const std::string& line)
{
static const char tbl[][3] = { "66", "67", "F2", "F3" };
size_t tblNum = sizeof(tbl) / sizeof(tbl[0]);
typedef std::set<std::string> StringSet;
StringSet suf;
size_t pos = 0;
for (; pos < line.size(); pos += 2) {
bool found = false;
for (size_t i = 0; i < tblNum; i++) {
if (::memcmp(&line[pos], tbl[i], 2) == 0) {
found = true;
suf.insert(tbl[i]);
break;
}
}
if (!found) break;
}
std::string ret;
for (StringSet::const_iterator i = suf.begin(), e = suf.end(); i != e; ++i) {
ret += *i;
}
ret += &line[pos];
return ret;
}
int main()
{
std::string line;
while (std::getline(std::cin, line)) {
std::string normalizedLine = normalize(line);
std::cout << normalizedLine << '\n';//std::endl;
}
}
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