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.BufferedWriter;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;


public class RecycledNumber {

	/**
	 * @param args
	 * @throws IOException 
	 */

	
	public static void main(String[] args) throws IOException {
		// TODO Auto-generated method stub
		BufferedReader in = new BufferedReader(new FileReader("./test3.txt"));
		FileWriter fstream = new FileWriter("./out3.txt");
		BufferedWriter out = new BufferedWriter(fstream);
		
		String str,str2;
		
		int i = 0;
		int numTestCase = Integer.parseInt(in.readLine());
		
		while ((str = in.readLine()) != null) {
			str2="";
			int numOK = 0;
			String[] toks;
			toks = str.split(" ");
			int LB = Integer.parseInt(toks[0]);
			int UB = Integer.parseInt(toks[1]);
			int numDigit = toks[0].length();
			int []prev = new int[numDigit-1];
			if(numDigit >1){
				for(int k = LB; k < UB;k++)
				{
					for(int j = 1; j< numDigit; j++)
					{				
						String temp = Integer.toString(k);
						String temp1 = temp.substring(0,j);
						String temp2 = temp.substring(j,numDigit);
						String result = temp2+temp1;
						int res = Integer.parseInt(result);
						
						if(res > k && res <= UB)
						{
							numOK++;
							for(int l = 0;l<j;l++)
							{
								if(res == prev[l]) numOK--;
							}	
						}
						prev[j-1] = res;
					}
				}
			}
			str2 = "Case #" + (++i) + ": " + numOK + "\n";
			out.append(str2);
			System.out.print(str2);
		}
		in.close();
		out.close();
	}

}
