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.*;

public class recycle {
    public static int[] pow10 = {1,10,100,1000,10000,100000,1000000,10000000};

    public static void main(String[] args) throws Throwable {
	Scanner input=new Scanner(new File("recycle.in"));
	PrintWriter out=new PrintWriter(new File("recycle.out"));
	int cases=input.nextInt();
	for(int test=1;test<=cases;test++) {
	    boolean[] visited=new boolean[2000001];
	    int a=input.nextInt();
	    int b=input.nextInt();
	    int rank=0, num=1;
	    int ans=0;
	    for(;num<=a;num*=10,rank++); // rank = #digits
	    for(int i=a;i<=b;i++) {
		if(visited[i]) continue;
		visited[i]=true;
		int temp=i;
		int count=1;
		for(int j=0;j<rank-1;j++) {
		    temp=temp/10+temp%10*pow10[rank-1];
		    if(temp<a || temp>b || visited[temp]) continue;
		    visited[temp]=true;
		    count++;
		    }
		ans+=count*(count-1)/2; //count choose 2
		}
	    out.println("Case #"+test+": "+ans);
	    }
	out.close();
	}
    }