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.*;
import java.io.*;

class Node implements Comparable{
	int x, y;
	public Node(){}
	public Node(int a, int b){
		x = a; y = b;
	}
	public boolean equals(Object key){
		Node tmp = (Node)key;
		if(x==tmp.x && y==tmp.y)  return  true;
		else  return  false;
	}
	public int compareTo(Object key){
		Node tmp = (Node)key;
		if(x == tmp.x)  return  y-tmp.y;
		else  return  x-tmp.x;
	}
}

public class C{
	Set hash = new TreeSet<Node>();
	void Cal(int A, int B, int n, PrintWriter cout){
		int ct = 0;
		String sn = Integer.valueOf(n).toString();
		for(int i = 1; i < sn.length(); i++){
			String sm = sn.substring(i) + sn.substring(0, i);
			int m = Integer.parseInt(sm);
			Node tmp = new Node(n, m);
			if(m>n && m<=B && !hash.contains(tmp))
				hash.add(tmp);
			//System.out.println(hash.size());
		}
	}
	void solve() throws FileNotFoundException{
		File fin = new File("data.in");
		File fout = new File("data.out");
		Scanner cin = new Scanner(fin);
		PrintWriter cout = new PrintWriter(fout);
		
		int T, A, B;
		T = cin.nextInt();
		for(int k = 1; k <= T; k++){
			A = cin.nextInt(); B = cin.nextInt();
			hash.clear();
			for(int i = A; i < B; i++)
				Cal(A, B, i, cout);
			cout.printf("Case #%d: %d\n", k, hash.size());
		}
		
		cout.flush();
	}
	public static void main(String [] args) throws Exception{
		C test = new C();
		test.solve();
	}
}












