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#include <cstdio>
#include <string.h>
#include <vector>
#include <map>
#include <iostream>
using namespace std;
const int NMax=30;
int N,L1,L2,connect[NMax];
bool ok[NMax],sta[NMax];
map<string,int> ID1,ID2;
map<int,string> rev1,rev2;
map<int,bool> State;
vector<int> G[NMax];
bool DFS(int a) {
    sta[a]=1;
    for(int p=0;p<G[a].size();p++) {
        if(!connect[G[a][p]]) {
            ok[a]=1;
            return 1;
        }else if(!sta[connect[G[a][p]]] && DFS(connect[G[a][p]])) {
            ok[a]=1;
            connect[G[a][p]]=a;
            return 1;
        }
    }
    return 0;
}
int main()
{
    string tmp;
    char buf[NMax],buf2[NMax];
    scanf("%d",&N);
    for(int i=1;i<=N;i++) {
        scanf("%s",buf);
        int len=strlen(buf);tmp.clear();
        for(int i=0;i<len;i++) tmp.push_back(buf[i]);
        ID2[tmp]=++L2;rev2[L2]=tmp;    
    }
    while(scanf("%s",buf),(buf[0]!='Q')) {
        scanf("%s",buf2);
        int len=strlen(buf2);tmp.clear();
        for(int i=0;i<len;i++) tmp.push_back(buf2[i]);
        if(buf[0]=='M') {
            int ID=ID2[tmp];
            for(map<int,bool>::iterator p=State.begin();p!=State.end();p++) if(p->second)
                G[p->first].push_back(ID);
            continue;
        }
        if(ID1[tmp]==0) {ID1[tmp]=++L1;rev1[L1]=tmp;}
        int ID=ID1[tmp];
        if(buf[0]=='E') State[ID]=1;
        else if(buf[0]=='L') State[ID]=0;
    }
    //puts("dsdfsdf");
    for(int i=1;i<=L1;i++) connect[i]=0;
    for(int i=1;i<=L2;i++) ok[i]=0;
    for(int i=1;i<=L2;i++) {
        for(int p=0;p<G[i].size();p++) {
            if(!connect[G[i][p]]) {
                connect[G[i][p]]=i;
                ok[i]=1;
                break;
            }
        }
    }
    for(int i=1;i<=L2;i++) {
        for(int j=1;j<=L2;j++) sta[j]=0;
        if(!ok[i]) DFS(i);
    }
    
    for(int i=1;i<=L1;i++) {
        if(connect[i]) cout <<rev1[i]<<':'<<rev2[connect[i]]<<endl;
        else cout <<rev1[i]<<':'<<"???"<<endl;
    }
    while(1)getchar();getchar();
    return 0;
}