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;
	}
}

package egWo;

import java.util.ArrayList;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class Cs {
	public static void main(String[] args) {
		Scanner in = new Scanner(System.in);
		int T = in.nextInt();

		for (int l = 1; l <= T; l++) {
			in.nextLine();
			int n = in.nextInt();
			int m = in.nextInt();
			int count = 0;

			if ((n % 10 > 0 && n / 10 == 0)) {
				count = 0;
			} else {
				for (int i = n; i < m; i++) {
					if (i / 10 < 10) {
						int u = i % 10;
						int ten = i / 10;
						int revI = (u * 10) + ten;
						if (i < revI && revI < m) {
							count++;
						}
					} else if (i / 10 <= 100 && i / 10 >= 10) {
						int uni = (i % 100) % 10;
						int ten = (i / 10) % 10;
						int per = i / 100;
						ArrayList revI = new ArrayList();
						revI.add(ten * 100 + uni * 10 + per);
						revI.add(uni * 100 + per * 10 + ten);

						Set set = new HashSet(revI);
						for (Object j : set) {							
							if (i < ((Integer) j).intValue()
									&& ((Integer) j).intValue() <= m) {
								count++;
							}
						}
					}
				}
			}
			System.out.format("\nCase #%d: %d", l, count);
		}
	}
}
