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.util.ArrayList;
import java.util.Arrays;
import java.util.Scanner;


public class RecycledNumbers {

	public static int outputLine(String inputLine){
		int count = 0;
		String[] inputArray = inputLine.split(" ");
		ArrayList line = new ArrayList(Arrays.asList(inputArray));
		int min = Integer.parseInt((String) line.get(0));
		int max = Integer.parseInt((String) line.get(1));
		
		
		for (int k = min; k <= max; k++) {
			
			for (int j = min; j <= max; j++) {
				int numbDigits = String.valueOf(min).length();
				for (int x = 0; x <numbDigits; x++) {
					if ((String.valueOf(j).substring(numbDigits - (x+1), numbDigits) + String.valueOf(j).substring(0,numbDigits - (x+1))).equals(String.valueOf(k))) {
						if (k < j) {
						count++;
						}
					}
				}
			}
		}
			
		return  count;
	}
	
	
	public static void main (String [] args) {
		ArrayList answers = new ArrayList();
		System.out.println("Insert a number.");
		int i;
		Scanner scan = new Scanner(System.in);
		i = Integer.parseInt(scan.nextLine());
		
		for (int j = 0; j< i; j++) {
			String inputLine = scan.nextLine();
			answers.add(outputLine(inputLine));
			}
		
		for (int j = 0; j < answers.size(); j++){
			System.out.println("Case #" + (j+1) + ": " + (answers.get(j)));
		}
	}		
}
