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.util.*;
import java.text.*;

public class ProblemC {
	
	public static void main(String[] args) {
		try {
			new ProblemC().solve();
		} catch (Exception e) {
			e.printStackTrace();
		}
	}
	
	public void solve() throws Exception {
		System.setIn(new FileInputStream("D:\\input.in"));
    	Scanner scan = new Scanner(System.in);
    	PrintWriter out = new PrintWriter(System.out);

    	int T = scan.nextInt();
    	for (int i=0;i<T;i++) {
    		int A = scan.nextInt();
    		int B = scan.nextInt();
  
    		long f = find(A, B);
    		System.out.println("Case #" + (i+1) + ": " + f);
    	}

		out.flush();
		out.close();
		scan.close();
	}
	
	private long find(int A, int B) {
		long resx = 0;
		
		for (int i=A;i<B;i++) {
			resx += howmany(i, B);
		}
		
		return resx;
	}
	
	private long howmany(int n, int B) {
		long t = 0;
		String s = String.valueOf(n);
		Set<String> st = new HashSet<String>();
		
		for (int i=1;i<s.length();i++) {
			if (s.charAt(0) > s.charAt(i)) continue;
			String ssub = s.substring(i) + s.substring(0, i);
			int pn = Integer.parseInt(ssub);
			
			
			if (pn > n && pn <= B) {
				t++;
				if (!st.add(s+ssub)) {
					t--;
				}
				//System.out.println(n + ", " + ssub + " ++");
			} else {
				//System.out.println(n + ", " + ssub);
			}
		}
		
		return t;
	}
	
}
