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.HashMap;
class probC{
	public static void main(String[] args){
		Code b=new Code();
	}
}
class Code{
	public Code(){
		try {
			FileWriter fstream = new FileWriter("output.txt");
			BufferedWriter out = new BufferedWriter(fstream);

			File fin = new File("C-small-attempt0.in");
			FileReader fr = new FileReader(fin);
			BufferedReader reader = new BufferedReader(fr);

			int t = Integer.parseInt(reader.readLine());

			for (int qq=0;qq<t;qq++){
				String soal=reader.readLine();
				int jwb=0;

				String[] agg=soal.split(" ");
				int awal=Integer.parseInt(agg[0]);
				int akhir=Integer.parseInt(agg[1]);

				for (int i=awal;i<=akhir;i++){
					for (int j=i+1;j<=akhir;j++){
						if (isRecycled(i,j)){
							jwb++;
						}
					}
				}

				out.write("Case #"+(qq+1)+": "+jwb+"\n");
			}

			reader.close();
			out.close();
		} catch (Exception e) {
			System.err.println(e.getMessage());
        }
	}
	public boolean isRecycled(int q,int w){
		boolean hsl=false;
		String a=q+"";
		String b=w+"";
		int pjg=a.length();

		for (int i=0;i<pjg;i++){
			if (a.equals(b)){
				return true;
			} else {
				b=b.substring(1)+b.charAt(0);
			}
		}

		return hsl;
	}
}