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

public class C {
	public static void main(String[] args) {
		Scanner sc = new Scanner(System.in);
		int n = sc.nextInt();
		for (int i = 0; i < n; i++) {
			int a = sc.nextInt();
			int b = sc.nextInt();
			long output = solve(a, b);
			System.out.println("Case #" + (i + 1) + ": " + output);
		}
	}

	private static long solve(int a, int b) {
		if (b <= 10)
			return 0;
		int start = a;
		
		if(a <= 10) start = 11;
		
		int count = 0;
		Set<Integer> found = new HashSet<Integer>();
		for(int i = start; i < b; i++){
			String toshift = String.valueOf(i);
			int len = toshift.length();
			
			for(int j =1; j<len;j++){
				String shifted = shift(toshift, j);
				int v = Integer.valueOf(shifted);
				if(v <= b && v >a && i < v && !found.contains(v) && !shifted.startsWith("0")) {
					found.add(v);
					count++;
				}
			}
			found.clear();
		}
		return count;
	}

	private static String shift(String toshift, int j) {
		String pre = toshift.substring(0, j);
		String post = toshift.substring(j);
		return post.concat(pre);
	}
}
