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();
    }
}

package recyclednumbers;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

/**
 *
 * @author Kocmi
 */
public class RecycledNumbers {

    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            StringTokenizer st;

            st = new StringTokenizer(br.readLine());
            int tests = Integer.parseInt(st.nextToken());
            int[] results = new int[tests]; //final result
            int A,B;
            
            for (int i = 0; i < tests; i++) {
                st = new StringTokenizer(br.readLine());
                A = Integer.parseInt(st.nextToken());
                B = Integer.parseInt(st.nextToken());
                
                results[i] = recycled(A,B,Integer.toString(A).length());
            }
            
            for (int i = 0; i < tests; i++) {
                System.out.println("Case #"+(i+1)+": "+results[i]);
            }
        } catch (Exception ex) {
        }
    }
    
    public static int recycled(int A, int B, int length){
        int result = 0;
        for (int n = A; n < B; n++) {
            //check n
            result += check(n,B,length);
        }
        
        return result;
    }
    
    public static int check(int n, int B, int length){
        int cycles = 0;
        int m = n;
        int rest;
        boolean a;
        int[] correct = new int[7];
        
        for (int i = 0; i < length-1; i++) {
            rest = m%10;
            m = (m/10);
            m = m+rest*(int)Math.pow(10,(length-1));
            
            if(n<m && m<=B){
                a = true;
                for (int j = 0; j < cycles; j++) {
                    if(correct[j]==m){
                        a=false;
                    }
                }
                if(a){
                    correct[cycles] = m;
                    cycles++;
                }
            }
        }
        return cycles;
    }
}
