#include<bits/stdc++.h> using namespace std; int main(){ int T,n,l,cnt; string s; cin>>T; while(T--) { cin>>n>>s; l=s.size(); for(int i=0;i<l;++i) { if(l<n && (s[i]=='w' || s[i]=='m')) { if(s[i]=='w') cout<<"uu"; else if(s[i]=='m') cout<<"nn"; --n; } else if(l>n && ((s[i]=='n' && s[i+1]=='n') || (s[i]=='u' && s[i+1]=='u') || (s[i]=='n' && s[i+1]=='m') || (s[i]=='u' && s[i+1]=='w'))) { if(s[i]=='n' && s[i+1]=='n') cout<<'m',++i; else if(s[i]=='u' && s[i+1]=='u') cout<<'w',++i; else if(s[i]=='n' && s[i+1]=='m') { cnt=i+1; while(s[cnt]=='m') ++cnt; if(s[cnt]=='n') { for(int j=cnt-i;j;--j) cout<<'m'; i=cnt; } } else if(s[i]=='u' && s[i+1]=='w') { cnt=i+1; while(s[cnt]=='w') ++cnt; if(s[cnt]=='u') { for(int j=cnt-i;j;--j) cout<<'w'; i=cnt; } } ++n; } else cout<<s[i]; } cout<<'\n'; } return 0; }