// Slower C++ solution:
#include <iostream>

#include <vector>

#include <map>

#include <queue>

using namespace std;



int upb(int n)

{

  int ret=0;

  while(n>0) ret++, n/=2;

  return ret;

}



int main()

{

  vector<bool> close(1<<(5*5), false);

  vector<int> cls;



  for (int n; cin>>n, !(n==0); ){



    vector<vector<int> > pats(n*n+1);

    vector<vector<int> > tmp(n, vector<int>(n, 0));

    for (int i=0; i<n; i++){

      for (int j=0; j<n; j++){

	for (int k=i; k<n; k++){

	  for (int l=j; l<n; l++){

	    for (int a=i; a<=k; a++)

	      for (int b=j; b<=l; b++)

		tmp[a][b]=1;

	    int bd=0;

	    for (int a=0; a<n; a++){

	      for (int b=0; b<n; b++){

		bd=(bd<<1)|tmp[a][b];

	      }

	    }

	    pats[upb(bd)].push_back(bd);

	    for (int a=i; a<=k; a++)

	      for (int b=j; b<=l; b++)

		tmp[a][b]=0;

	  }

	}

      }

    }



    int bd=0;

    for (int i=0; i<n; i++){

      for (int j=0; j<n; j++){

	int t; cin>>t;

	bd=(bd<<1)|t;

      }

    }



    queue<pair<int, int> > mm;

    mm.push(make_pair(0, bd));

    close[bd]=true;

    cls.push_back(bd);

    while(!mm.empty()){

      int dep=mm.front().first;

      int cbd=mm.front().second;

      mm.pop();

      //cout<<cbd<<endl;

      int ub=upb(cbd);

      for (int i=0; i<pats[ub].size(); i++){

	int nbd=cbd^pats[ub][i];

	if (nbd==0){

	  for (int i=0; i<=dep; i++)

	    cout<<"myon";

	  cout<<endl;

	  goto _exit;

	}

	//cout<<"*** "<<nbd<<endl;

	if (close[nbd]) continue;

	close[nbd]=true;

	cls.push_back(nbd);

	mm.push(make_pair(dep+1, nbd));

      }

    }

  _exit:;

    for (int i=0; i<cls.size(); i++)

      close[cls[i]]=false;

    cls.clear();

  }

  return 0;

}

// Faster C++ solution for the same problem (measured speedup: 4.378217568542892x):
#include <iostream>

#include <cstdio>

#include <vector>

#include <algorithm>

using namespace std;



int main()

{

  static int close[(1<<(5*5))/32];

  static int cls[1000000];



  for (int n; scanf("%d", &n), !(n==0); ){



    vector<vector<int> > pats(33);

    static int tmp[5][5];



    for (int i=0; i<n; i++){

      for (int j=0; j<n; j++){

	for (int k=i; k<n; k++){

	  for (int l=j; l<n; l++){

	    for (int a=i; a<=k; a++)

	      for (int b=j; b<=l; b++)

		tmp[a][b]=1;

	    int bd=0;

	    for (int a=0; a<n; a++){

	      for (int b=0; b<n; b++){

		bd=(bd<<1)|tmp[a][b];

	      }

	    }

	    pats[__builtin_clz(bd)].push_back(bd);

	    for (int a=i; a<=k; a++)

	      for (int b=j; b<=l; b++)

		tmp[a][b]=0;

	  }

	}

      }

    }



    int bd=0;

    for (int i=0; i<n; i++){

      for (int j=0; j<n; j++){

	int t; scanf("%d", &t);

	bd=(bd<<1)|t;

      }

    }



    int cls_cnt=0, cls_cur=0;

    close[bd>>5]|=(1<<(bd&31));

    cls[cls_cnt++]=bd;

    for (;;){

      int dep=cls[cls_cur]>>25;

      int cbd=cls[cls_cur]&0x1ffffff;

      cls_cur++;

      const vector<int> &ps=pats[__builtin_clz(cbd)];

      int sz=ps.size();

      for (int i=0; i<sz; i++){

	int nbd=cbd^ps[i];

	if (close[nbd>>5]&(1<<(nbd&31)))

	  continue;

	close[nbd>>5]|=(1<<(nbd&31));

	cls[cls_cnt++]=((dep+1)<<25)|nbd;

	if (nbd==0){

	  for (int i=0; i<=dep; i++)

	    printf("myon");

	  puts("");

	  goto _exit;

	}

      }

    }

  _exit:;

    {

      int i=0;

      for (; i+3<cls_cnt; i+=4){

	close[(cls[i+0]&0x1ffffff)>>5]=0;

	close[(cls[i+1]&0x1ffffff)>>5]=0;

	close[(cls[i+2]&0x1ffffff)>>5]=0;

	close[(cls[i+3]&0x1ffffff)>>5]=0;

      }

      for (; i<cls_cnt; i++)

	close[(cls[i]&0x1ffffff)>>5]=0;

    }

  }

  return 0;

}