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.FileReader;

public class Third {

	public static void main(String[] args) throws Exception {
		BufferedReader reader = new BufferedReader(new FileReader(new File(
				"/Users/narok119/Desktop/C-small-attempt0.in")));

		String txt = reader.readLine();
		int caseCount = 1;

		while ((txt = reader.readLine()) != null) {
			// Form the input
			String[] info = txt.split(" ");
			int a = Integer.parseInt(info[0]);
			int b = Integer.parseInt(info[1]);
			int output = 0;

			for (int n = a; n < b; n++) {
				for (int m = n + 1; m <= b; m++) {
					String ns = n + "";
					String ms = m + "";
					if (ns.length() == ms.length()) {
						for (int i = 0; i < ns.length(); i++) {
							String ms1 = ms.substring(0, i);
							String ms2 = ms.substring(i);
							if ((ms2 + ms1).equals(ns)) {
								output++;
								break;
							}
						}
					}
				}
			}
			System.out.println("Case #" + caseCount++ + ": " + output);
		}
	}

}
