#include <iostream>
#include <cstdio>
#include <queue>
#include <set>
#include <map>
#include <cmath>
using namespace std;
typedef unsigned long long ull;
ull B = 1000000003ull;
int a[5]={2,1,0,1,2};
int b[5]={2,3,4,3,2};
int dx[5]={0,1,0,-1};
int dy[5]={1,0,-1,0};
int px[13]={0,1,1,1,2,2,2,2,2,3,3,3,0};
int py[13]={0,1,2,3,0,1,2,3,4,0,1,2,0};

struct State
{
	int f[5][5];
	int t;
};
ull hash(State x)
{
	ull t = 1ull;
	ull res = 0;
	for(int i=0;i<5;i++)
	{
		for(int j=a[i];j<=b[i];j++)
		{
			res += x.f[i][j]*t;
			t *= B;
		}
	}
	return res;
}
map<ull,int> mp;
set<ull> used;
bool check(State x)
{
	int cnt=1;
	for(int i=1;i<=3;i++)
	{
		for(int j=a[i];j<=b[i];j++)
		{
			if(x.f[i][j]!=cnt)return false;
			cnt++;
		}
	}
	return true;
}
bool cc(State x)
{
	int res = 0;
	for(int i=0;i<5;i++)
	{
		for(int j=a[i];j<=b[i];j++)
		{
			if(x.f[i][j])
			{
				int k = x.f[i][j];
				res += (abs(px[k]-i)+abs(py[k]-j));
			}
		}
	}
	return (res>20-x.t);
}
int ans = 21;
void bfs(State st)
{
	queue<State> q;
	mp[hash(st)]=0;
	q.push(st);
	while(!q.empty())
	{
		State A = q.front();
		q.pop();
		//cout << "koko" << endl;
		for(int i=0;i<5;i++)
		{
			for(int j=0;j<5;j++)
			{
				if(j<a[i]||b[i]<j)continue;
				if(A.f[i][j]==0)continue;
				for(int k=0;k<4;k++)
				{
					int nx=i+dx[k],ny=j+dy[k];
					if(nx<0||nx>=5||ny<0||ny>=5)continue;
					if(ny<a[nx]||b[nx]<ny)continue;
					if(A.f[nx][ny]!=0)continue;
					State B = A;
					swap(B.f[nx][ny],B.f[i][j]);
					B.t++;
					//cout << "a" << endl;
					if(B.t>8)continue;
					ull hb = hash(B);
					if(mp.find(hb)!=mp.end())continue;
					//cout << hb << endl;
					mp[hb]=B.t;
					q.push(B);
				}
			}
		}
	}
	//cout << "owari" << endl;
}
void bfs2(State st)
{
	queue<State> q;
	if(check(st)){ans=0;return;}
	q.push(st);
	while(!q.empty())
	{
		State A = q.front();
		q.pop();
		ull ha=hash(A); 
		if(mp.find(hash(A))!=mp.end()){ans = min(ans,A.t+mp[ha]);continue;}
		for(int i=0;i<5;i++)
		{
			for(int j=0;j<5;j++)
			{
				if(j<a[i]||b[i]<j)continue;
				if(A.f[i][j]==0)continue;
				for(int k=0;k<4;k++)
				{
					int nx=i+dx[k],ny=j+dy[k];
					if(nx<0||nx>=5||ny<0||ny>=5)continue;
					if(ny<a[nx]||b[nx]<ny)continue;
					if(A.f[nx][ny]!=0)continue;
					State B = A;
					swap(B.f[nx][ny],B.f[i][j]);
					B.t++;
					if(cc(B))continue;
					ull hb = hash(B);
					if(used.find(hb)!=used.end())continue;
					used.insert(hb);
					q.push(B);
				}
			}
		}
	}
}
int main()
{
	State end;
	int cnt=1;
	end.t=0;
	for(int i=0;i<5;i++)for(int j=0;j<5;j++)end.f[i][j]=-1;
	end.f[0][2]=0;
	end.f[4][2]=0;
	for(int i=1;i<=3;i++)for(int j=a[i];j<=b[i];j++)end.f[i][j]=cnt++;
	/*for(int i=0;i<5;i++)
	{
		for(int j=a[i];j<=b[i];j++)cout << end.f[i][j] << ' ';
		cout << endl;
	}*/
	bfs(end);
	while(1)
	{
		State st;
		used.clear();
		ans = 21;
		for(int i=0;i<5;i++)for(int j=0;j<5;j++)st.f[i][j]=-1;
		for(int i=0;i<5;i++)
		{
			for(int j=a[i];j<=b[i];j++)
			{
				cin >> st.f[i][j];
				if(st.f[i][j]==-1)goto end;
			}
		}
		st.t=0;
		bfs2(st);
		if(ans>20)printf("NA\n");
		else printf("%d\n",ans);
	}
	end:;
	return 0;
}