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();
    }
}

package com.techy.rajeev;

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

public class Recycled {
	public static int[] toIntArray(String line){
		String[] p = line.trim().split("\\s+");
		int[] out = new int[p.length];
		for(int i=0;i<out.length;i++) out[i] = Integer.valueOf(p[i]);
		return out;
	}
	public static void main(String[] args) throws Exception, IOException {
		BufferedReader br = new BufferedReader(new FileReader("techyrajeev.txt"));
		BufferedWriter bw = new BufferedWriter(new FileWriter("myoutput.out"));
		int num=Integer.valueOf(br.readLine().trim());
		int k=1,count=0;
		while(num>0){
			int arr[]=toIntArray(br.readLine());
			int x=arr[0];
			int y=arr[1];
			String past="";
			for(int i=x;i<=y;i++){
				String temp=i+"";
				for(int j=temp.length()-1,m=1;j>0;j--,m++){
				String test=temp.substring(m)+temp.substring(0,m);
				if(test.equals(past)){
					break;
				}
				int lk=Integer.parseInt(test);
				if(lk>i&&lk<=y){
					count++;
					past=test;
				}
				}
			}
			bw.write("Case #"+k+": "+count);
			bw.newLine();
			count=0;
			num--;
			k++;
		}
		br.close();
		bw.close();
		
	}

}
