#include <iostream.h>
#include <stdio.h>
#include <string.h>
int p[4]={-1,-1,-1,-1};
struct student
{
    char name [256];
};
int getfac(char* fn);
int main ()
{
    int n,i,j,id;
    struct student stud[4][1000];
    char* fc[4]={"Slytherin","Hufflepuff","Gryffindor","Ravenclaw"};
    char tmp1[256];
    char tmp2[256];
    scanf("%i", &n);
    for(i=0;i<n;i++)
    {
        //scanf("%s\n%s\n",tmp1,tmp2);
        //printf("%s\t-\t%s",tmp1,tmp2);
        cin.getline(tmp1,256);

        //cout<<tmp1<<endl;
        cin.getline(tmp2,256);
        //cout<<tmp2<<endl;
        id=getfac(tmp2);
        strcpy(stud[id][p[id]].name,tmp1);


    }
    for(i=0;i<4;i++)
    {
        if(p[i]>-1)
            cout<<fc[i]<<":\n";
        for(j=0;j<p[i]+1;j++)
        {
            cout<<stud[i][j].name<<"\n";
        }
        cout<<"\n";
    }
    /*char x[256];
    cin.getline (x,256);
    cout<<x<<endl;*/
    return 0;
}

int getfac(char* fn)
{
    if(!strcmp(fn, "Slytherin"))
    {
        p[0]++;
        return 0;
    }
        if(!strcmp(fn, "Hufflepuff"))
    {
        p[1]++;
        return 1;
    }
        if(!strcmp(fn, "Gryffindor"))
    {
        p[2]++;
        return 2;
    }
            if(!strcmp(fn, "Ravenclaw"))
    {
        p[3]++;
        return 3;
    }
    return -1;
}