content: package v122;
  
  import java.io.BufferedReader;
  import java.io.IOException;
  import java.io.InputStream;
  import java.io.InputStreamReader;
  import java.io.PrintWriter;
  import java.util.StringTokenizer;
  
  public class OverlappingScenes_UVa12249 {
  
  	static String[] scenes;
  	static int N, order[], minLength;
  	
  	static void bt(int idx, int used)
  	{
  		if(idx == N)
  		{
  			String res = "";
  			for(int x: order)
  				res = merge(res, scenes[x]);
  			minLength = Math.min(minLength, res.length());
  			return;
  		}
  		for(int i = 0; i < N; ++i)
  			if((used & 1<<i) == 0)
  			{
  				order[idx] = i;
  				bt(idx + 1, used | 1<<i);
  			}
  	}
  	
  	static String merge(String x, String y)
  	{
  		int maxMatch = 0;
  		for(int i = 0; i < x.length(); ++i)
  		{
  			int j = 0;
  			while(i + j < x.length() && j < y.length() && x.charAt(i + j) == y.charAt(j))
  				++j;
  			if(i + j == x.length())
  				maxMatch = Math.max(maxMatch, j);
  		}
  		return x.substring(0, x.length() - maxMatch) + y;
  	}
  	
  	public static void main(String[] args) throws Exception 
  	{
  		Scanner sc = new Scanner(System.in); 
  		PrintWriter out = new PrintWriter(System.out);
  
  		int tc = sc.nextInt();
  		for(int t = 1; t <= tc; ++t)
  		{
  			scenes = new String[N = sc.nextInt()];
  			minLength = 0;
  			for(int i = 0; i < N; ++i)
  			{
  				scenes[i] = sc.next();
  				minLength += scenes[i].length();
  			}
  			order = new int[N];
  			bt(0, 0);
  			out.printf("Case %d: %d\n", t, minLength);
  		}
  		
  		out.flush();
  		out.close();
  	}
  
  	static class Scanner 
  	{
  		StringTokenizer st;
  		BufferedReader br;
  
  		public Scanner(InputStream s){	br = new BufferedReader(new InputStreamReader(s));}
  
  		public String next() throws IOException 
  		{
  			while (st == null || !st.hasMoreTokens()) 
  				st = new StringTokenizer(br.readLine());
  			return st.nextToken();
  		}
  
  		public int nextInt() throws IOException {return Integer.parseInt(next());}
  
  		public long nextLong() throws IOException {return Long.parseLong(next());}
  
  		public String nextLine() throws IOException {return br.readLine();}
  
  		public double nextDouble() throws IOException
  		{
  			String x = next();
  			StringBuilder sb = new StringBuilder("0");
  			double res = 0, f = 1;
  			boolean dec = false, neg = false;
  			int start = 0;
  			if(x.charAt(0) == '-')
  			{
  				neg = true;
  				start++;
  			}
  			for(int i = start; i < x.length(); i++)
  				if(x.charAt(i) == '.')
  				{
  					res = Long.parseLong(sb.toString());
  					sb = new StringBuilder("0");
  					dec = true;
  				}
  				else
  				{
  					sb.append(x.charAt(i));
  					if(dec)
  						f *= 10;
  				}
  			res += Long.parseLong(sb.toString()) / f;
  			return res * (neg?-1:1);
  		}
  
  		public boolean ready() throws IOException {return br.ready();}
  
  		public boolean nextEmpty() throws IOException
  		{
  			String s = nextLine();
  			st = new StringTokenizer(s);
  			return s.isEmpty();
  		}
  	}
  }