#include <bits/stdc++.h> using namespace std; int t,n; string s; int main() { int i,j; scanf("%d",&t); while(t--) { scanf("%d",&n); cin>>s; for(i=0;i<s.size();i++) if(s[i]=='w'||s[i]=='m'||s[i]=='u'||s[i]=='n') break; if(i==s.size()||n==s.size()) { cout<<s<<"\n"; continue; } int k=s.length(); if(n-k>0) { int change=n-s.size(); for(i=0;i<s.size();i++) { if(change&&s[i]=='w') printf("uu"),change--; else if(change&&s[i]=='m') printf("nn"),change--; else cout<<s[i]; } printf("\n"); continue; } string s2=""; for(i=0;i<s.size();i++) { if(s[i]=='w') s2+="uu"; else if(s[i]=='m') s2+="nn"; else s2+=s[i]; } if(n-k<0) { int change=s2.size()-n; i=0; while(i<s2.size()) { if(change&&s2[i]=='u') { if(s2[i]==s2[i+1]) printf("w"),i+=2,change--; else printf("u"),i++; } else if(change&&s2[i]=='n') { if(s2[i]==s2[i+1]) printf("m"),i+=2,change--; else printf("n"),i++; } else cout<<s2[i++]; } printf("\n"); } } return 0; }