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.*;

public class RecycledNumbers {
    
    private ArrayList<Integer> input = new ArrayList<Integer>();
    public static void main(String argz[]) throws IOException{
        RecycledNumbers r = new RecycledNumbers();
        r.readInput();
        r.generateAndCheck();
    }
    
    public void generateAndCheck(){
        int caseNo = 0;
        for(int i = 0; i < input.size(); i += 2){
            int count = 0;
            int A = input.get(i);
            int B = input.get(i + 1);
            for(int n = A; n <= B; n++){
                for(int m = n + 1; m <= B; m++){
                    if(check(n, m)) count++;
                }
            }
            System.out.print("Case #" + (++caseNo) + ": ");
            System.out.println(count);
        }
    }
    
    public boolean check(int n, int m){
        StringBuilder N = new StringBuilder(String.valueOf(n));
        do{
            N.insert(0, N.charAt(N.length() - 1));
            N.deleteCharAt(N.length() - 1);
            if(Integer.parseInt(N.toString()) == m){
                return true;
            }
        } while(Integer.parseInt(N.toString()) != n);
        
        return false;
    }
    
    private void readInput() throws IOException{
        FileReader file = new FileReader("in.in");
        try {
            Scanner reader = new Scanner(file);
            int testCases = reader.nextInt();
            while (testCases > 0){
                input.add(reader.nextInt());
				input.add(reader.nextInt());
                testCases--;
            }         
        } catch (Exception e){
            System.err.println("Error: " + e.getMessage());
        }
    }
}