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

int main(void)
{
  int i = 0, j;
  char str[101], tree[] = "treeone",
      temp[8];

  scanf("%s", str);
  while(str[i] != '\0'){
    for(j = 0; j < 7; j++){
      temp[j] = str[i + j];
    }
    if(strcmp(temp, tree) == 0){
      printf("forest");
      i += 7;
    }else{
      printf("%c", str[i++]);
    }
  }
  puts("");
  return 0;
}