import java.io.*;

class code1
{
	public static void main(String args[]) throws Exception 
	{
		File ii = new File ("C-small-attempt1.in");
		FileInputStream fis = new FileInputStream(ii);
		BufferedReader  br = new BufferedReader(new InputStreamReader (fis));
		int cases = Integer.parseInt(br.readLine());
		FileOutputStream fout = new FileOutputStream ("output.txt");
		DataOutputStream dout = new DataOutputStream (fout);
		int total=0;
		for(int i=0;i<cases;i++){
		String temp = br.readLine();
		String parts [] = temp.split(" ");
		int lower = Integer.parseInt(parts[0]);
		int upper = Integer.parseInt(parts[1]);
		System.out.println(lower+" "+upper);
		
		for(int j=lower;j<=upper;j++)
		{
			int abc = j;int length=0;
			if(j<10)continue;
			while (abc!=0){abc/=10;length++;}
			abc=j;
			for(int m=0;m<length-1;m++){
				int shift = abc%10;
				abc=abc/10;
				System.out.println("hi "+j);
				abc=abc+shift*power(10,length-1);
				if(abc<=upper&&shift!=0&&abc>j)total++;
				System.out.println(total);
			}
		}
 		dout.writeBytes("Case #"+(i+1)+ ": "+total+"\n");
 		total=0;
		}//for close
		
	}

	private static int power(int i, int j) {
		int no=1;
		for(int a=0;a<j;a++){no=10*no;}
		return no;
	}
}
import java.util.*;

public class Main {

  public static void main(String args[]) {
    (new Main()).solve();
  }

  void solve() {

    Scanner cin = new Scanner(System.in);
    int T = cin.nextInt();

    for(int C=1; C<=T; ++C) {

      int A = cin.nextInt();
      int B = cin.nextInt();

      int n = ("" + A).length();
      int base = 1;
      for(int i=1; i<n; ++i) { base *= 10; }

      int count = 0;
      for(int i=A; i<=B; ++i) {
        count += solve(n, base, i, B);
      }

      System.out.println("Case #" + C + ": " + count);

    }

  }

  int solve(int n, int base, int v, int max) {

    Set<Integer> set = new HashSet<Integer>();

    int min = v + 1;
    for(int i=0; i<n; ++i) {
      int next = (v / 10) + (v % 10) * base;
      v = next;
      if( min <= next && next <= max ) { set.add(v); }
    }

    return set.size();

  }

}
