import java.util.Scanner;

class Main {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int t=sc.nextInt();
		int casos=1, a, b, n, m, cont;
		while(t!=0){
			a=sc.nextInt();
			b=sc.nextInt();
			if(a>b){
				int aux=a;
				a=b;
				b=aux;
			}
			System.out.printf("Case #%d: ",casos++);
			if(a==b){
				System.out.printf("%d\n",0);
			}else{
				cont=0;
				for(n=a;n<b;n++){					
					for(m=n+1;m<=b;m++){					
						if(isRecycled(n,m)) cont++;
					}
				}
				System.out.printf("%d\n",cont);
			}
			t--;
		}		
	}
	public static boolean isRecycled(int n1, int n2){
		String s1, s2, aux;
		s1 =  String.valueOf( n1 );
		s2 =  String.valueOf( n2 );		
		boolean r = false;		
		for(int i=0;i<s1.length();i++){
			aux="";
			aux=s1.substring(i,s1.length())+s1.substring(0,i);
//			System.out.println(aux);
			if(aux.equals(s2)){
				r=true;
				break;
			}
		}		
		return r;
	}
}

import java.awt.print.Printable;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Scanner;


public class C {
    public static void main(String[] args) throws IOException {
        Scanner scanner = null;
        scanner = new Scanner(new File("C-small-attempt0.in"));
//        scanner = new Scanner(System.in);
        FileWriter writer = new FileWriter("C.out");
        int t = scanner.nextInt();
        for (int tt = 1; tt <= t ; tt ++ ) {
            int a = scanner.nextInt();
            int b = scanner.nextInt();
            
            String str;
            int k;
            int ans = 0;
            String tmp;
            for (int i = a; i <= b; i ++) {
                str = Integer.toString(i);
                if (str.length() > 1) {
                    for (int j = 1; j < str.length(); j++) {
                        tmp = str.substring(j, str.length())
                        + str.substring(0,j);
                        if (tmp.startsWith("0")) continue;
                        k = Integer.parseInt(tmp);
                        if (k >=a && k <= b && k > i) ans ++;
                    }
                }
            }
            
            writer.write(String.format("Case #%d: %d\n", tt,ans));
            System.out.println(String.format("Case #%d: %d\n", tt,ans));
        }
        writer.close();
    }

}
