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.HashSet;

public class code33 {
    public static void main(String[] args) throws IOException{
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        FileWriter fos = new FileWriter("outfile",false);
        BufferedWriter bw = new BufferedWriter(fos);
        int T=Integer.parseInt(br.readLine()), A , B , j ,i ;
        String str[];
        for(j=1;j<=T; j++)
        {
            str=br.readLine().split(" ");
            A= Integer.parseInt(str[0]); B=  Integer.parseInt(str[1]);
            
            bw.write("Case #"+j+": "+swapncal(A, B)+"\n");
            //System.out.print("Case #"+j+": "+swapncal(A, B)+"\n");
        }
        bw.close();
        
        
    }
    public static int swapncal(int A,int B)
    {
        int n=0, p ,num; 
        String xs; 
        HashSet<Integer> set = new HashSet<Integer>();
        for (int x= A; x <=(A+B); x++)
            {
                set.clear();
                xs=x+"";
                for(p=1;p< xs.length();p++)
                {
                    num=Integer.parseInt(xs.substring(p)+xs.substring(0, p));
                    if( num > x && !set.contains(num) && num >=A && num <=B)
                    {
                        set.add(num);
                        n++;
                    }
                }
                
            }
        return n;
    }
}