import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}


/*
ID: codeKNIGHT
LANG: JAVA
TASK: 
*/
import java.util.*;
import java.math.*;
import java.io.*;
class recyledNumbers
{
    public static void main(String args[])throws IOException
    {
        //Scanner in=new Scanner(System.in);
        Scanner in=new Scanner(new FileReader("C:\\Users\\Lokesh\\Desktop\\C-small-attempt0.in"));
        //PrintWriter out=new PrintWriter(System.out);
        //BufferedReader br=new BufferedReader(new FileReader("C:\\Users\\Lokesh\\Desktop\\input.in"));
        PrintWriter out=new PrintWriter(new BufferedWriter(new FileWriter("E:\\programss\\GCJ\\output.txt")));
        int t=in.nextInt(),test,i,a,b,j;
        String s,s1,s2;
        for(test=1;test<=t;test++)
        {
            a=in.nextInt();
            b=in.nextInt();
            int c=0,k;
            
            for(i=a;i<=b;i++)
            {
                s=Integer.toString(i);
                int max=s.charAt(0);
                boolean stat=false;
                for(j=1;j<s.length();j++)
                {
                    if(s.charAt(j)>=max)
                    {
                        s1=s.substring(j,s.length());
                        s2=s.substring(0,j);
                        
                        k=Integer.parseInt(s1+s2);
                        if(k>i&&k<=b&&!stat)
                        {
                            c++;
                            
                        }
                        if(s1.equals(s2))
                        stat=true;
                    }
                }
                
            }
            out.println("Case #"+test+": "+c);
        }
        out.flush();
        System.exit(0);
    } 
}
