1 /**
2 稳定婚姻：男生不停的求婚，女生不停地拒绝
3 **/
4
5 #include <iostream>
6 #include <queue>
7 #include <cstdio>
8 #include <cstring>
9 using namespace std;
10 #define maxn 40
11 int pref[maxn][maxn],order[maxn][maxn],next[maxn];
12 int future_wife[maxn],future_huaband[maxn];
13 int man[maxn];
14 queue<int > q;
15 char str[50];
16 void engage(int man,int woman){
17 int m = future_huaband[woman];
18 if(m){
19 future_wife[m] =0;
20 q.push(m);
21 }
22 future_huaband[woman] = man;
23 future_wife[man] = woman;
24 }
25 int main()
26 {
27 int t;
28 scanf("%d",&t);
29 while(t--){
30 memset(man,0,sizeof(man));
31 int n;
32 scanf("%d",&n);
33 char c;
34 for(int i=0;i<n;i++){//男
35 cin>>c;
36 man[c-'a'+1] =1;
37 }
38 for(int i=0;i<n;i++)//女
39 cin>>c;
40 for(int i=1;i<=n;i++){//男喜欢
41 cin>>str;
42 //cout<<str<<endl;
43 int temp = str[0]-'a'+1;//哪个男生
44 //cout<<temp<<endl;
45 for(int j=2;str[j];j++){
46 pref[temp][j-1] = str[j]-'A'+1;
47 //cout<<pref[temp][j]<<endl;
48 }
49 next[temp] = 1;
50 future_wife[temp] =0;
51 q.push(temp);
52 }
53 for(int i=1;i<=n;i++){
54 cin>>str;
55 //cout<<str<<endl;
56 int temp = str[0]-'A'+1;
57 for(int j=2;str[j];j++){
58 order[temp][str[j]-'a'+1] = j-1;
59 }
60 future_huaband[temp] =0;
61 }
62 while(!q.empty()){
63 int man = q.front();
64 q.pop();
65 int woman = pref[man][next[man]++];
66 if(!future_huaband[woman]){
67 engage(man,woman);
68 }else if(order[woman][man]<order[woman][future_huaband[woman]]){
69 engage(man,woman);
70 }else
71 q.push(man);
72 }
73 while(!q.empty()) q.pop();
74 for(int i=1;i<maxn;i++)if(man[i]){
75 printf("%c %c\n",(char)(i-1+'a'),(char)(future_wife[i]-1+'A'));
76 }
77 if(t)
78 printf("\n");
79 }
80 return 0;
81 }
