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.FileReader;
import java.io.FileWriter;

public class RecycledNumbers {
	private static boolean isRecycled(long f,long s){

		String str1 = String.valueOf(f);
		String str2 = String.valueOf(s);
		
		if(str1.length()!=str2.length()){
			return false;
		}
		
		for(int i=1;i<str1.length();i++){
			String tmp = str1.substring(i)+str1.substring(0, i);
			if(tmp.equals(str2)){
				return true;
			}
		}
		
		return false;
	}
	
	public static void main(String[] args) {
			try{
				// Get the object of DataInputStream
				//DataInputStream in = new DataInputStream(System.in);
				BufferedReader br = new BufferedReader(new FileReader("C-small-attempt0.in"));
				FileWriter fstream = new FileWriter("out.txt");
				BufferedWriter out = new BufferedWriter(fstream);
				String strLine;
				
				strLine = br.readLine();
				int T = Integer.valueOf(strLine);
				for(int i=0;i<T;i++){
					long counter = 0;
					strLine = br.readLine();
					String[] list = strLine.split(" ");
					long A = Long.valueOf(list[0]);
					long B = Long.valueOf(list[1]);
					for(long j=A;j<=B;j++){
						for(long k=j+1;k<=B;k++){
							if(isRecycled(j,k)){
								counter++;
							}
						}
					}
										
					out.write("Case #"+(i+1)+": "+counter+"\n");
				}

				//Close the input stream
				br.close();
				out.close();
			}catch (Exception e){//Catch exception if any
				System.err.println("Error: " + e.getMessage());
				e.printStackTrace();
			}		

		}
}
