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

public class C {

    void solve() throws IOException {
        in("C-large.in"); out("C-large.out");

        long tm = System.currentTimeMillis();
        boolean[] mask = new boolean[2000000];
        int[] r = new int[10];
        int t = readInt();
        for (int cs = 1; cs <= t; ++cs) {
            int a = readInt();
            int b = readInt();
            int ans = 0;
            for (int m = a + 1; m <= b; ++m) {
                char[] d = String.valueOf(m).toCharArray();
                int c = 0;
                for (int i = 1; i < d.length; ++i) {
                    if (d[i] != '0' && d[i] <= d[0]) {
                        int n = 0;
                        for (int j = 0; j < d.length; ++j) {
                            int jj = i + j;
                            if (jj >= d.length) jj -= d.length;
                            n = n * 10 + (d[jj] - '0');
                        }
                        if (n >= a && n < m && !mask[n]) {
                            ++ans;
                            mask[n] = true;
                            r[c++] = n;
                        }
                    }
                }
                for (int i = 0; i < c; ++i) {
                    mask[r[i]] = false;
                }
            }
            println("Case #" + cs + ": " + ans);
            //System.out.println(cs);
        }
        System.out.println("time: " + (System.currentTimeMillis() - tm));
        exit();
    }

    void in(String name) throws IOException {
        if (name.equals("__std")) {
            in = new BufferedReader(new InputStreamReader(System.in));
        } else {
            in = new BufferedReader(new FileReader(name));
        }
    }

    void out(String name) throws IOException {
        if (name.equals("__std")) {
            out = new PrintWriter(System.out);
        } else {
            out = new PrintWriter(name);
        }
    }

    void exit() {
        out.close();
        System.exit(0);
    }

    int readInt() throws IOException {
        return Integer.parseInt(readToken());
    }

    long readLong() throws IOException {
        return Long.parseLong(readToken());
    }

    double readDouble() throws IOException {
        return Double.parseDouble(readToken());
    }

    String readLine() throws IOException {
        st = null;
        return in.readLine();
    }

    String readToken() throws IOException {
        while (st == null || !st.hasMoreTokens()) {
            st = new StringTokenizer(in.readLine());
        }
        return st.nextToken();
    }

    boolean eof() throws IOException {
        return !in.ready();
    }

    void print(String format, Object ... args) {
        out.println(new Formatter(Locale.US).format(format, args));
    }

    void println(String format, Object ... args) {
        out.println(new Formatter(Locale.US).format(format, args));
    }

    void print(Object value) {
        out.print(value);
    }

    void println(Object value) {
        out.println(value);
    }

    void println() {
        out.println();
    }

    StringTokenizer st;

    BufferedReader in;
    PrintWriter out;

    public static void main(String[] args) throws IOException {
        new C().solve();
    }
}

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 RecycledNumbers {
	
	public static int len(int A){
		int k = 1 ;
		int r = 0;
		while( k < A){
			k = k * 10;
			r = r + 1;
		}
		return r;
	}
	public static int count(int A , int B){
		int r = 0;
		for(int i = A ; i < B ; i ++){
			int mul = 1 ;
			int len = 0;
			while(mul <= i){
				mul = mul * 10;
				len = len + 1;
			}
			
			int[] prev = new int[len - 1];
			int it = 10;
			for(int j = 0 ; j < len - 1 ; j ++){
				int right = i % it;
				int left = i / it;
				mul = mul / 10;
				int result = right * mul + left;
				it = it * 10;
				
				boolean duplicate = false;
				for(int k = 0 ; k < j ; k ++){
					if(result == prev[k]){
						duplicate = true;
						break;
					}
				}
				if(result > i && result >= A && result <= B && !duplicate){
				//	System.out.println(result + "\t" + i);
					r ++;
					prev[j] = result;
				}
			}
		}
		return r;
	}
	
	public static void main(String args[]) throws IOException{
		//System.out.println(count(1 , 2000000));
		BufferedReader reader = new BufferedReader(new FileReader(new File("C-large.in")));
		BufferedWriter writer = new BufferedWriter(new FileWriter(new File("output.txt")));
		String line = reader.readLine();
		int T = Integer.parseInt(line);
		for(int i = 0 ; i < T ; i ++){
			line = reader.readLine();
			String tokens[] = line.split("\\s+");
			int N = Integer.parseInt(tokens[0]);
			int S = Integer.parseInt(tokens[1]);
			int count = count(N , S);
			writer.write("Case #" + (i + 1) + ": " + count + "\r\n");
		}
		reader.close();
		writer.close();
	}

}
