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.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;

public class Main {
	
	public static void main(String[] args) {
		try {
			BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream("input.txt")));
				String line = br.readLine();
				BufferedWriter out = new BufferedWriter(new FileWriter("output.txt"));
				int tests = Integer.valueOf(line.trim());
				for (int i = 0; i < tests; i++) {
					String[] number = br.readLine().split(" ");
					int a = Integer.valueOf(number[0]);
					int b = Integer.valueOf(number[1]);
					int digits = number[1].length();
					int result = 0;
					int multiplier = 1;
					for (int j = 0; j < digits - 1; j++) {
						multiplier *= 10;
					}
					for (int j = a; j < b; j++) {
						int value = j;
						int size = 0;
						while (true) {
							value = value/10 + (value % 10)*multiplier;
							if (a <= value && value <= b) {
								size++;
							}
							
							if (a <= value && value < j) {
								break;
							}
							if (value == j) {
								result += size*(size - 1)/2;
								break;
							}
						}
					}
					out.write("Case #"+ (i + 1) +": " + result + "\n");
				}
				out.close();
		} catch (FileNotFoundException e) {
			e.printStackTrace();
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
}