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 compete;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;

public class Recycle {
	private static void print(String sth) {
		System.out.println(sth);
	}

    private static int recycle(int A, int B) {
        
        int n=0;
        for (int i=A;i<B;i++) {
            String t = i+"";

            ArrayList<Integer> l = new ArrayList<Integer>();
            for (int k=0;k<t.length();k++) {
                char c = t.charAt(0);
                t = t.substring(1)+c;	
                if (t.charAt(0)=='0') continue;
                int ti = Integer.parseInt(t);
                if (ti>B||ti<=i) continue;
                if (!l.contains(ti)) {
                	l.add(ti);
                	n++;
                }
            }
        }

        return n;
    }

	public static void main(String args[]) throws IOException {
		BufferedReader in = new BufferedReader(new FileReader("input.txt"));
		
		int num = Integer.parseInt(in.readLine());
		
		for (int i=0;i<num;i++) {
			String sentence = in.readLine();
			Scanner s = new Scanner(sentence);
			
			int A = s.nextInt();
			int B = s.nextInt();
			
			print("Case #"+(1+i)+": "+recycle(A,B));
		}	
	}
}
