import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;

public class Recycled {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            int t = Integer.parseInt(br.readLine());
            for (int i = 0; i < t; i++) {
                String[] str = br.readLine().split(" ");
                int a = Integer.parseInt(str[0]);
                int b = Integer.parseInt(str[1]);
                System.out.println("Case #" + (i + 1) + ": " + find(a, b));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static int find(int a, int b) {
        HashSet<Long> used = new HashSet<Long>();
        int digits = String.valueOf(a).length();
        if (digits == 1) return 0;
        for (int i = a; i <= b; i++) {
            int s = 10;
            int m = (int) Math.pow(10, digits-1);
            for (int j = 0; j < digits-1; j++) {
                int r = i % s;
                if (r < s/10) continue;
                int q = i / s;
                int rn = r * m + q;
                s *= 10; m /= 10;
                if (i != rn && rn >= a && rn <= b) {
                    long pp;
                    if (rn < i) pp = (long)rn << 30 | i;
                    else pp = (long)i << 30 | rn;
                    if (!used.contains(pp)) {
                        used.add(pp);
                    }
                }
            }
        }
        return used.size();
    }
}

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;
  }
}