#include<bits/stdc++.h>
using namespace std;
using Int = long long;
struct UnionFind{
  Int n;
  vector<Int> r,p;
  UnionFind(){}
  UnionFind(Int sz):n(sz),r(sz,1),p(sz,0){iota(p.begin(),p.end(),0);}
  Int find(Int x){
    return (x==p[x]?x:p[x]=find(p[x]));
  }
  bool same(Int x,Int y){
    return find(x)==find(y);
  }
  bool unite(Int x,Int y){
    x=find(x);y=find(y);
    if(x==y) return 0;
    if(r[x]<r[y]) swap(x,y);
    r[x]+=r[y];
    p[y]=x;
    return 1;
  }
};
template<typename T1,typename T2> inline void chmin(T1 &a,T2 b){if(a>b) a=b;}
template<typename T1,typename T2> inline void chmax(T1 &a,T2 b){if(a<b) a=b;}
signed main(){  
  cin.tie(0);
  ios::sync_with_stdio(0);
  Int n,a,b;
  while(cin>>n>>a>>b,n||a||b){
    UnionFind uf(a+b);
    UnionFind co(a+b);
    vector<vector<Int> > ng(a+b);
    for(Int i=0;i<n;i++){
      Int x,y;
      string s;
      cin>>x>>y>>s;
      x--;y--;
      if(s=="yes") uf.unite(x,y);
      else{
	ng[x].emplace_back(y);
	ng[y].emplace_back(x);
      }
      co.unite(x,y);
    }
    vector<Int> dp(a+b+1,0);
    vector<vector<Int> > bk;
    vector<Int> vs;

    while(1){
      Int flg=0;
      for(Int i=0;i<a+b;i++){
	if(uf.find(i)==i) continue;
	for(Int x:ng[i])
	  ng[uf.find(i)].emplace_back(x);
	ng[i].clear();
      }      
      for(Int i=0;i<a+b;i++){
	if(uf.find(i)!=i) continue;
	for(Int x:ng[i]) flg|=uf.unite(x,ng[i][0]);
      }
      if(!flg) break;
    }
    dp[0]=1;
    vector<Int> used(a+b,0);
    for(Int i=0;i<a+b;i++){
      if(used[co.find(i)]) continue;
      used[co.find(i)]=1;
      
      vs.emplace_back(uf.find(i));
      bk.emplace_back(dp);      
      
      Int x=uf.r[uf.find(i)],y=co.r[co.find(i)]-x;
      vector<Int> nx(a+b+1,0);
      //cout<<x<<" "<<y<<endl;
      
      for(Int j=0;j<=a+b;j++){
	if(j+x<=a+b) nx[j+x]+=dp[j];
	if(j+y<=a+b) nx[j+y]+=dp[j];
      }
      
      for(Int j=0;j<=a+b;j++) chmin(nx[j],2);
      swap(dp,nx);
    }
    //for(Int x:dp) cout<<x<<endl;
    
    if(dp[a]!=1){
      cout<<"no"<<endl;
      continue;
    }
    
    vector<vector<Int> > rks(a+b);
    vector<Int> oth(a+b,-1);
    for(Int i=0;i<a+b;i++){
      Int k=uf.find(i);
      rks[co.find(k)].emplace_back(k);      
    }

    for(Int i=0;i<a+b;i++){
      vector<Int> &v=rks[i];
      sort(v.begin(),v.end());
      v.erase(unique(v.begin(),v.end()),v.end());
      v.emplace_back(-1);
    }

    for(Int i=0;i<a+b;i++){
      Int k=uf.find(i);
      oth[k]=rks[co.find(k)][rks[co.find(k)][0]==k];
    }
    
    bk.emplace_back(dp);
    reverse(vs.begin(),vs.end());
    reverse(bk.begin(),bk.end());
    set<Int> dev;
    Int pos=a;
    
    //cout<<vs.size()<<":"<<bk.size()<<endl;
    for(Int i=0;i<(Int)vs.size();i++){
      Int x=uf.r[vs[i]],y=co.r[co.find(vs[i])]-x;
      assert(x>=0&&y>=0);
      assert((pos>=x&&bk[i+1][pos-x]==1)^(pos>=y&&bk[i+1][pos-y]==1));
      
      if(pos>=x&&bk[i+1][pos-x]==1){
	dev.emplace(vs[i]);
	pos-=x;
      }else{
	if(y) dev.emplace(oth[vs[i]]);
	pos-=y;
      }
    }
    assert(pos==0);
    
    Int cnt=0;
    for(Int i=0;i<a+b;i++)
      if(dev.count(uf.find(i)))
	cout<<i+1<<endl,cnt++;

    assert(cnt==a);
    cout<<"end"<<endl;
  }
  return 0;
}




Measured memory_bytes: 3308