import java.util.*;
import java.io.*;

public class recycled_numbers {
	public static void main(String[]a) throws Exception{
		
		Scanner f = new Scanner(new File(a[0]));
		int result=0;
		int A,B;
		String n,m;
		HashSet<String> s=new HashSet<String>();
		
		int T=f.nextInt();	//T total case count
		for (int t=1; t<=T;t++){//for each case t
			
			s.clear();
			result=0;				//reset
			A=f.nextInt();B=f.nextInt();	//get values for next case
			
			if (A==B)result=0;//remove case not meeting problem limits 
			else{
				for(int i=A;i<=B;i++){//for each int in range
					n=Integer.toString(i);
					m=new String(n);
					//System.out.println(n);
					for (int j=1;j<n.length();j++){//move each digit to the front & test
						m = m.substring(m.length()-1)+m.substring(0,m.length()-1);
						if(m.matches("^0+[\\d]+")!=true &&
								Integer.parseInt(m)<=B &&
								Integer.parseInt(n)<Integer.parseInt(m)){
							s.add(new String(n+","+m));
							//result++;
							//System.out.println(" matched: "+m);
						}
						
					}
				}
				result = s.size();
			}

			//display output
			System.out.println("Case #" + t + ": " + result);
		}
	}
}
import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class CRecycled {
    public static void main(String[] args) throws FileNotFoundException {
        Scanner in = new Scanner(new File("C-large.in"));
        PrintWriter out = new PrintWriter("C-large.out");
        final int T = in.nextInt();
        //final int T = 50;
        for (int t = 1; t <= T; ++t) {
            final int A = in.nextInt(), B = in.nextInt();
//            final int A = 1000000, B = 2000000;
            int result = 0;
            for (int n = A; n <= B; ++n) {
                String s = Integer.toString(n);
                Set<Integer> ms = new HashSet<Integer>();
                for (int i = 0; i+1 < s.length(); ++i) {
                    s = s.substring(1) + s.charAt(0);
                    int m = Integer.parseInt(s);
                    if (m > n && m <= B && s.charAt(0) != '0') {
                        ms.add(m);
                    }
                }
                result += ms.size();
            }
            out.println("Case #" + t + ": " + result);
        }
        out.close();
    }

}
