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

void main(void){
    char str[500] = "a";
    scanf("%s",str);
    int i = 0;
    while(str[i] != '\0'){
        char search[10] = "";
        strncpy(search, str+i, 7);
        search[8] = '\0';
        if(strcmp(search,"treeone") == 0){
            printf("forest");
            i+=7;
        }else{
            printf("%c",str[i]);
            i++;
        }
    }
}