#include <stdio.h>

void replace(char *);

int main(void)
{
  int idx, i, j;
  char str[101], replaced[101];
  char tree[] = "treeone";
  idx = i = 0;
  scanf("%s", str);

  while(str[i] != '\0'){
    if(str[i] == tree[0]){
      for(j = 1; tree[j] != '\0'; j++){
        if(str[i + j] == tree[j]){
        }else{
          break;
        }
      }
    }
    if(j == 7){
      replace(&replaced[idx]);
      idx += 6;
      i += 7;
      j = 0;
    }else{
      replaced[idx++] = str[i++];
    }
  }
  printf("%s\n", replaced);

  return 0;
}


void replace(char *s)
{
  int i;
  char forest[] = "forest";

  for(i = 0; i < 6; i++){
    s[i] = forest[i];
  }
}