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.util.*;
import java.io.*;

class gcj2{
	public static void main(String[] args) throws IOException{
		BufferedReader inp = new BufferedReader(new FileReader("inp.txt"));
		BufferedWriter out = new BufferedWriter(new FileWriter("out.txt"));
		int test = Integer.parseInt(inp.readLine());
		int p = 1;
		while(test>0){
			String d[] = inp.readLine().split(" ");
			int a = Integer.parseInt(d[0]);
			int b = Integer.parseInt(d[1]);
			int i = a;
			int count = 0;
			while(i<=b){
				String s = new Integer(i).toString();
				int j = 1;
				HashSet<Integer> se = new HashSet<Integer>();
				while(j<s.length()){
					String temp = s.substring(j,s.length())+s.substring(0,j);
					if(temp.charAt(0)=='0') {
						j++;
						continue;
					}
					else {
						int t = Integer.parseInt(temp);
						se.add(t);
					}
					j++;
				}
				Iterator<Integer> it = se.iterator();
				while(it.hasNext()){
					int gg = it.next();
					if(gg>i&&gg<=b){
				//		System.out.println(gg +" "+i);
						count++;
					}
				}
			//	System.out.println("------------------");
				i++;
			}
			out.write("Case #"+p+": "+count+"\n");
			System.out.println(count);
			test--;
			p++;
		}
		out.close();
	}
}