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.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
/**
 *
 * @author UDDAMA
 */
public class recyclePair {

    private ArrayList<String> numholder = new ArrayList<String>();

    public void numrecylce(String chars) {
        for (int i = 0; i < chars.length() - 1; i++) {
            this.numholder.add(chars.substring(i + 1) + chars.substring(0, i + 1));
        }
    }

    public void cleanArray() {

        for (int i = 0; i < numholder.size(); i++) {
            String temp = numholder.get(i);
            for (int j = i + 1; j < numholder.size(); j++) {
                if (temp.equalsIgnoreCase(numholder.get(j))) {
                    numholder.remove(j);
                }
            }
        }
    }

    public int recycleCount(String A, String B) {

        int count = 0;
        for (int i = Integer.parseInt(A); i < Integer.parseInt(B); i++) {
            this.numholder.clear();
            this.numrecylce(String.valueOf(i));
            this.cleanArray();

            for (int j = 0; j < numholder.size(); j++) {

                if (Integer.parseInt(numholder.get(j)) > i && Integer.parseInt(numholder.get(j)) <= Integer.parseInt(B)) {
                    count++;
                }
            }
        }
        return count;
    }

    public static void main(String[] args) throws IOException {

        BufferedReader is = new BufferedReader(new InputStreamReader(System.in));
        String inputLine = is.readLine();
        recyclePair rp = new recyclePair();

        int cases = Integer.parseInt(inputLine);

        for (int i = 0; i < cases; i++) {

            inputLine = is.readLine();
            String[] AB = inputLine.split(" ");

            System.out.println("Case #" + (i + 1) + ": " + rp.recycleCount(AB[0], AB[1]));


        }
    }
}