import java.io.*;
import java.util.*;

class B
{
	public static void main(String[] args) 
	{
		try
		{
			BufferedReader br = new BufferedReader(new FileReader("B.in"));
			PrintWriter pw = new PrintWriter(new FileWriter("B.out"));
			int X = Integer.parseInt(br.readLine());

			for(int i=0; i<X; i++)
			{
				String[] S = br.readLine().split(" ");
				int A = Integer.parseInt(S[0]);
				int B = Integer.parseInt(S[1]);
				int R = 0;

				int x = 1;
				int n = 0;
				while(A/x > 0) {
					n++;
					x *= 10;
				}

				for(int j=A; j<B; j++) {
					Set<Integer> seen = new HashSet<Integer>();
					for(int k=1; k<n; k++) {
						int p1 = j % (int)Math.pow(10, k);
						int p2 = (int) Math.pow(10, n-k);
						int p3 = j / (int)Math.pow(10, k);
						int y = p1*p2 + p3;
						
						if(j < y && !seen.contains(y) && y <= B) {
							seen.add(y);
							R++;
						}
					}
				}

				pw.printf("Case #%d: %d\n", i+1, R);
				pw.flush();
			}
		}
		catch(Exception e)
		{ 
			e.printStackTrace();
		}
	}
}

import java.io.*;
import java.util.*;


class recycledNumbers{
  public static void main(String arg[]){
    System.out.println("Please Enter the name of your file");
    Scanner input = new Scanner(System.in);
    String fileName = input.next();
    recycle(fileName);
  }
  public static void recycle(String fileName){
    try{
    BufferedReader br = new BufferedReader(new FileReader(fileName));
    BufferedWriter bw = new BufferedWriter(new FileWriter("recycle.out"));
    
    int numCases = Integer.parseInt(br.readLine());
    int A=0;
    int B=0;
    String line="";
    for(int i=0; i<numCases; i++){
    line = br.readLine();
    int indexOfSpace=line.indexOf(' ');
    A=Integer.parseInt(line.substring(0,indexOfSpace));
    B=Integer.parseInt(line.substring(indexOfSpace+1));
    int count=0;
    
    for(int m=A; m<=B; m++){
      count += swap(m,B);

    }
    String ans = "Case #" + (i+1) + ": " + count;
    System.out.println(ans);
    bw.write(ans);
    bw.newLine();
    }
    br.close();
    bw.close();
    }catch(IOException e){}
  }
  
  public static int swap(int A,int B){
    String valA = A + "";
    int var_length = valA.length();
    int var_swap = var_length-1;
    String firstpart="";
    String secondpart="";
    String combine="";
    int combined=0;
    int verified=0;
    int temp=-99;
    
    for(int i=0; i<var_swap; i++){
      firstpart=valA.substring(0,var_swap-i);
      secondpart=valA.substring(var_swap-i);
      combine = secondpart + firstpart;
      combined = Integer.parseInt(combine);
      
      //System.out.println(combined);
      
      if((temp != combined) && (combined>A) && (combined<=B)){
        temp = combined;
        verified++;
      }
      
    }
    return verified;
  }
}