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();
    }
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package codejam;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Collection;
import java.util.HashMap;
import java.util.StringTokenizer;

/**
 *
 * @author parusnik
 */
public class Codejam {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new FileReader("input.txt"));
        BufferedWriter bw = new BufferedWriter(new FileWriter("output.txt"));
        
        int T = Integer.parseInt(br.readLine());
        StringTokenizer st;
        String s1, s2;
        
        HashMap<String, Integer> map = new HashMap<String, Integer>();
        
        for (int t = 1; t<=T; t++){
            
            bw.write("Case #" + String.valueOf(t) + ": ");
            
            st = new StringTokenizer(br.readLine());
            int a = Integer.parseInt(st.nextToken());
            int b = Integer.parseInt(st.nextToken());
            
            long d = 0;
            
            map.clear();
            
            for (int i = a; i<=b; i++){
                String s = String.valueOf(i);
                String str = s;
                for (int k = 0; k<10; k++){
                    s = s.substring(1, s.length()) + s.substring(0, 1);
                    str = min (str, s);
                }
                int x = 0;
                if (map.containsKey(str)) x = map.get(str);
                map.put(str, x+1);
            }
            
            Collection<Integer> col = map.values();
            for (Integer i : col) {
                d+=(long) (i)*(i-1)/2;
            }
            
            bw.write(String.valueOf(d));
            
            bw.newLine();
        }
        
        br.close();
        bw.close();
    }
    
    static String min(String s1, String s2){
        if (Integer.parseInt(s1)<Integer.parseInt(s2)) return s1; else return s2;
    }
}
