Red Huang

//====================================================================||  
//                                                                    ||  
//                                                                    ||  
//                         Author : GCA                               ||  
//                  6AE7EE02212D47DAD26C32C0FE829006                  ||  
//====================================================================||  
#include <iostream>  
#include <cstdio>  
#include <cstring>  
#include <algorithm>  
#include <cmath>  
#include <climits>  
#include <vector>  
#include <set>  
#include <map>  
#include <queue>  
#include <cctype>  
#include <utility>  
using namespace std;  
#ifdef ONLINE\_JUDGE  
#define ll "%lld"  
#else  
#define ll "%I64d"  
#endif  
typedef unsigned int uint;  
typedef long long int Int;  
#define Set(a,s) memset(a,s,sizeof(a))  
#define Write(w) freopen(w,"w",stdout)  
#define Read(r) freopen(r,"r",stdin)  
#define Pln() printf("\\n")  
#define I\_de(x,n)for(int i=0;i<n;i++)printf("%d ",x\[i\]);Pln()  
#define De(x)printf(#x"%d\\n",x)  
#define For(i,x)for(int i=0;i<x;i++)  
#define CON(x,y) x##y  
#define Pmz(dp,nx,ny)for(int hty=0;hty<ny;hty++){for(int htx=0;htx<nx;htx++){\\  
    printf("%d ",dp\[htx\]\[hty\]);}Pln();}  
#define M 55  
#define PII pair<int,int\>  
#define PB push\_back  
#define oo INT\_MAX  
#define Set\_oo 0x3f  
#define Is\_debug true  
#define debug(...) if(Is\_debug)printf("DEBUG: "),printf(\_\_VA\_ARGS\_\_)  
#define FOR(it,c) for(\_\_typeof((c).begin()) it=(c).begin();it!=(c).end();it++)  
#define eps 1e-6  
bool xdy(double x,double y){return x>y+eps;}  
bool xddy(double x,double y){return x>y-eps;}  
bool xcy(double x,double y){return x<y-eps;}  
bool xcdy(double x,double y){return x<y+eps;}  
int min3(int x,int y,int z){  
    int tmp=min(x,y);  
    return min(tmp,z);  
}  
int max3(int x,int y,int z){  
    int tmp=max(x,y);  
    return max(tmp,z);  
}  
int t,p,s;  
string topic\[M\];  
map<string,int\> sid;  
int mz\[M\]\[M\];  
int sel\[M\];  
bool cmp(string a,string b){  
    if(a.length()==b.length()){  
        return a<b;  
    }  
    return a.length()>b.length();  
}  
void init(){  
    Set(mz,0);  
    sid.clear();  
}  
void dfs(int index,int n,int dep){  
    if(n==s){  
        for(int i=0;i<n-1;i++){  
            printf("%s ",topic\[sel\[i\]\].c\_str());  
        }  
        printf("%s\\n",topic\[sel\[n-1\]\].c\_str());  
        return ;  
    }  
    if(dep==0){  
        for(int i=0;i<t;i++){  
            sel\[n\]=i;  
//            printf("%s ",topic\[i\].c\_str());  
            dfs(i+1,n+1,dep+1);  
        }  
    }else{  
        for(int i=index;i<t;i++){  
            bool canput=true;  
            for(int j=0;j<n;j++){  
                if(mz\[sel\[j\]\]\[i\]){  
                    canput=false;  
                    break;  
                }  
            }  
            if(canput){  
                sel\[n\]=i;  
                dfs(i+1,n+1,dep+1);  
            }  
        }  
    }  
}  
int ff=0;  
void solve(){  
    printf("Set %d:\\n",++ff);  
    dfs(0,0,0);  
    Pln();  
}  
int main() {  
    ios\_base::sync\_with\_stdio(0);  
    int test;  
    scanf("%d",&test);  
    while(test--){  
        scanf("%d%d%d",&t,&p,&s);  
        init();  
        char str\[100\],str2\[100\];  
        for(int i=0;i<t;i++){  
            scanf("%s",str);  
            int len=strlen(str);  
            for(int j=0;j<len;j++){  
                str\[j\]=toupper(str\[j\]);  
            }  
            topic\[i\]=str;  
        }  
        sort(topic,topic+t,cmp);  
        for(int i=0;i<t;i++)sid\[topic\[i\]\]=i;  
        for(int i=0;i<p;i++){  
            scanf("%s%s",str,str2);  
            int len=strlen(str);  
            for(int j=0;j<len;j++){  
                str\[j\]=toupper(str\[j\]);  
            }  
            len=strlen(str2);  
            for(int j=0;j<len;j++){  
                str2\[j\]=toupper(str2\[j\]);  
            }  
            int x=sid\[str\],y=sid\[str2\];  
            mz\[x\]\[y\]=1;  
            mz\[y\]\[x\]=1;  
        }  
        solve();  
    }  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
  
}