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.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;


public class recycle {
	static int A=1111;
	static int B=2222;
	static int counter=0;
	static int cases=0;
	public static void main(String args[]) throws NumberFormatException, IOException{
		String temp,temp1[];
		FileReader in=new FileReader(new File("in"));
		BufferedReader br=new BufferedReader(in);
		FileOutputStream out=new FileOutputStream("out"); 
		cases=Integer.parseInt(br.readLine());
		for(int k=0;k<cases;k++){
			counter=0;
			temp=br.readLine();
			temp1=temp.split(" ");
			A=Integer.parseInt(temp1[0]);
			B=Integer.parseInt(temp1[1]);
		for(int i=A;i<B;i++)
			for(int j=i+1;j<=B;j++)
			{
				if(isRecycled(i,j))
					counter++;
			}
			out.write(("Case #"+(k+1)+": "+counter+"\n").getBytes());
		}
		System.out.println("\nans"+counter);
	}
	static boolean isRecycled(int n,int m){
		String ns=new Integer(n).toString();
		String ms=new Integer(m).toString();
		String temp;
		if(ns.length()==ms.length()){
		
			for(int i=0;i<ns.length();i++){
				temp=ns.substring(i)+ns.substring(0,i);
				if(temp.equals(ms))
					return true;
			}
		}
		return false;
	}
}
