#include<iostream>
#include<algorithm>
#include<iomanip>

#define N 7
#define INV (-1)

#define UP 0
#define RIGHT 1
#define DOWN 2
#define LEFT 3
#define DIRMAX 4

#define NA 20

using namespace std;

struct State
{
  int map[N][N];
  State(){
    //fill(&map[0][0],&map[N-1][N-1],-1);
  }
  State(int tmap[][N]){
    for(int i = 0; i < N; ++i){
      for(int j = 0; j < N; ++j){
	map[i][j] = tmap[i][j];
      }
    }
  }
  bool move(int which, int dir){
    // which = 0, upper,left
    // which != 0, bottom,right
    for(int i = (which==0?0:N-2); which==0?(i<N-1):(i>=1); which==0?++i:--i){
      for(int j = (which==0?0:N-2); which==0?(j<N-1):(j>=1); which==0?++j:--j){
	if( map[i][j] == 0 ){
	  switch(dir){
	  case UP:   if( map[i-1][j] > 0 ){swap( map[i][j], map[i-1][j] );return true;}break;
	  case RIGHT:if( map[i][j+1] > 0 ){swap( map[i][j], map[i][j+1] );return true;}break;
	  case DOWN: if( map[i+1][j] > 0 ){swap( map[i][j], map[i+1][j] );return true;}break;
	  case LEFT: if( map[i][j-1] > 0 ){swap( map[i][j], map[i][j-1] );return true;}break;
	  }
	  return false;
	}
      }
    }
  }
  int getHeuristic()const{
    const int ti[] = {0,2,2,2,3,3,3,3,3,4,4,4};
    const int tj[] = {0,2,3,4,1,2,3,4,5,2,3,4};
    int ret = 0;
    int max1=0,max2=0;
    for(int i = 1; i < N-1; ++i){
      for(int j = 1; j < N-1; ++j){
	if( map[i][j] > 0 ){
	  int x = abs(i-ti[map[i][j]] )+ abs(j-tj[map[i][j]]);
	  ret += x;
	  if( max1 < x ){
	    max2 = max1;
	    max1 = x;
	  }
	}
      }
    }
    return ret;
  }
  bool isComplete()const{
    return getHeuristic() == 0;
  }
};

int IterativeDeepning(int depth, const State &now, int &ans)
{

  if( now.isComplete() ){
    ans = min( ans , depth );
    return ans;
  }
  int least = depth+now.getHeuristic();
  if( least > ans ){
    return NA;
  }
  // ans = min( ans, least );
  for(int w = 0; w < 2; ++w){
    for(int dir = 0; dir < DIRMAX; ++dir){
      State next = now;
      if( next.move( w, dir ) ){
	ans = min( ans, IterativeDeepning( depth + 1, next, ans ) );
      }
    }
  }
  return NA;
}

int main()
{
  while(true){
    int map[N][N];
    int ans;
    fill(&map[0][0],&map[N-1][N],-1);
    
    const int imax[] = {1,3,5,3,1};
    const int dj[] = {2,1,0,1,2};
    for(int i = 0; i < 5; ++i){
      for(int j = 0; j < imax[i]; ++j){
	int t;
	cin >> t;
	if( t < 0 ) return 0;
	map[i+1][j+dj[i]+1]=t;
      }
    }

    /*
    for(int i = 0; i < N; ++i){
      for(int j = 0; j < N; ++j){
	cout << setw(3) << map[i][j] << ' ';
      }
      cout << endl;
    }
    cout << endl;
    */

    ans = NA+1;
    IterativeDeepning( 0, State(map), ans );
    if( ans > NA ){
      cout << "NA" << endl;
    }else{
      cout << ans << endl;
    }
      
  }
  return 0;
}