#include <stdio.h>
#include <string.h>

int main()
{
	char S[101];
	fgets(S, 101, stdin);
	char *t, *s;
	for (s = S; (t = strstr(s, "treeone")) != NULL; s = t+7) {
		fwrite(s, 1, t-s, stdout);
		fwrite("forest", 1, 6, stdout);
	}
	fputs(s, stdout);
	return 0;
}