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.io.*;
import java.math.*;
import java.util.*;
import java.text.*;
import java.util.regex.*;

import static java.lang.Math.*;
import static java.util.Arrays.*;
import static java.util.Collections.*;
import static java.lang.Integer.*;
import static java.lang.Double.*;
import static java.lang.Character.*;


public class C {
	
	static class Pair {
		int a, b;

		public Pair(int a, int b) {
			super();
			this.a = a;
			this.b = b;
		}

		@Override
		public int hashCode() {
			final int prime = 31;
			int result = 1;
			result = prime * result + a;
			result = prime * result + b;
			return result;
		}

		@Override
		public boolean equals(Object obj) {
			if (this == obj)
				return true;
			if (obj == null)
				return false;
			if (getClass() != obj.getClass())
				return false;
			Pair other = (Pair) obj;
			if (a != other.a)
				return false;
			if (b != other.b)
				return false;
			return true;
		}
	}

	Object solve() {
		String As = sc.next();
		int l = As.length();
		int A = parseInt(As);
		int B = sc.nextInt();
	
		int ml = (int)pow(10,l-1);
		HashSet<Pair> used = new HashSet<Pair>();
		
		for (int n = A; n < B; n++) {
			int m = n;
			for (int i = 0; i < l; i++) {
				m = m/10 + (m%10)*ml;
				if (n < m && m <= B)
					used.add(new Pair(n,m));
			}
		}
		
		return used.size();
	}

	private static Scanner sc; private static PrintWriter fw;

	public static void main(String[] args) throws Exception {
		String inFile;
//		inFile = "input.txt";
		inFile = "C-small-attempt0.in";
//		inFile = "A-large.in";
		
//		sc = new Scanner(System.in);
		sc = new Scanner(new FileInputStream(inFile));
		
		fw = new PrintWriter(new FileWriter("output.txt", false));

		
		int N = sc.nextInt();
		sc.nextLine();
		
		for (int cas = 1; cas <= N; cas++) {
			fw.print("Case #" + cas + ": ");
//			fw.println("Case #" + cas + ": ");
			Object res = new C().solve();
			if (res instanceof Double) 
				fw.printf("%.10f\n", res);
			else
				fw.printf("%s\n", res);
			fw.flush();
		}
		fw.close();
		sc.close();
	}

}
