import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;

public class Recycled {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            int t = Integer.parseInt(br.readLine());
            for (int i = 0; i < t; i++) {
                String[] str = br.readLine().split(" ");
                int a = Integer.parseInt(str[0]);
                int b = Integer.parseInt(str[1]);
                System.out.println("Case #" + (i + 1) + ": " + find(a, b));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static int find(int a, int b) {
        HashSet<Long> used = new HashSet<Long>();
        int digits = String.valueOf(a).length();
        if (digits == 1) return 0;
        for (int i = a; i <= b; i++) {
            int s = 10;
            int m = (int) Math.pow(10, digits-1);
            for (int j = 0; j < digits-1; j++) {
                int r = i % s;
                if (r < s/10) continue;
                int q = i / s;
                int rn = r * m + q;
                s *= 10; m /= 10;
                if (i != rn && rn >= a && rn <= b) {
                    long pp;
                    if (rn < i) pp = (long)rn << 30 | i;
                    else pp = (long)i << 30 | rn;
                    if (!used.contains(pp)) {
                        used.add(pp);
                    }
                }
            }
        }
        return used.size();
    }
}

import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.HashMap;


public class main {

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
		BufferedReader dat=new BufferedReader(new FileReader("input"));
		int BRCASE=Integer.parseInt(dat.readLine());
		for(int ic=1;ic<=BRCASE;ic++){
			String str[]= dat.readLine().split(" ");
			System.out.println("Case #"+ic+": "+test(Integer.parseInt(str[0]),Integer.parseInt(str[1])));
		}
	}
	public static int test(int n, int m){
		boolean [] pominati= new boolean[m-n+10];
		int rez=0;
		for(int i=n;i<=m;i++){
			int ttl=0;
			int tmp=i;
			if(!pominati[tmp-n]){
				do{
					if(tmp>=n && tmp<=m){
						if(!pominati[tmp-n]){
							pominati[tmp-n]=true;
							ttl++;
						}
					}
					tmp=rotate(tmp);
				}while(tmp!=i);
			}
			rez+=(ttl>=2)?comb(ttl,2):0;
		}
		return rez;
		
	}
	public static int rotate(int x){
		int pow = (int)Math.log10(x);
		do{
			if(x%10!=0){
				x = (int) ((int)x%10*Math.pow(10, pow)+(int)x/10);
				break;
			}else{
				x = (int) ((int)x%10*Math.pow(10, pow)+(int)x/10);
			}
		}while(true);
		return x;
	}
	
	public static int fact(int x){
		int ret=1;
		for(int i=1;i<=x;i++){
			ret*=i;
		}
		return ret;
	}
	public static long comb(int n, int k){
		if(k>(n-k))
		k=n-k;
		long c=1;
		for(int i=0; i<k; i++)
		{
			c=c*(n-i);
			c=c/(i+1);   
		}
		return c;
	}
}
