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();
    }
}

package Jam;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Iterator;

public class ProblemC {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub
		ProblemC p = new ProblemC();
		p.readAndOutput();
	}
	
	public int cmp(byte[] s1,int start,byte[]s2)
	{
		int tmp = 0;
		for( int i = 0;i<s2.length;i++ )
		{
			tmp = (i + start )%s1.length;
			if( s1[tmp] == s2[i] )
				continue;
			return s1[tmp] - s2[i];
		}
		return 0;
	}
	byte min[];
	byte max[];
	HashMap<String,Integer> hm;
	
	
	public void print(byte[] tmp,int st)
	{
		StringBuffer sb = new StringBuffer();
		for( int i = 0;i<tmp.length;i++ )
		{
			sb.append((char)tmp[i]);
		}
		for( int i = 0;i<tmp.length;i++ )
		{
			sb.append((char)tmp[(i + st )%tmp.length]);
		}
		String x = sb.toString();
		hm.put(x, 1);
	}
	
	public int l_cal(byte[] tmp,int pos,int st)
	{
		
		if( pos >= tmp.length )
		{
			if( st == -1 )
				return 0;
			if( cmp(tmp,0,min) >=0 && cmp(tmp,0,max) <=0 && cmp(tmp,st,min) >=0 && cmp(tmp,st,max) <=0 )
			{
				print(tmp,st);
				return 1;
			}else
			{
				return 0;
			}
		}
		int sum = 0;
		byte k;
		if( st == -1 )
		{
			k = (byte) (tmp[0] + 1);
			for(;k<=max[0];k++)
			{
				tmp[pos] = k;
				sum += l_cal(tmp,pos+1,pos);
			}
		}
		for( k = '0'; k <= '9'; k++ )
		{
			tmp[pos] = k;
			sum += l_cal(tmp,pos+1,st);
		}
		return sum;
	}
	
	public int m_cal(byte[] tmp,int pos,int st)
	{
		
		if( pos >= tmp.length )
		{
			if( st == -1 )
				return 0;
			if( cmp(tmp,st,tmp) > 0 && cmp(tmp,0,min) >=0 && cmp(tmp,0,max) <=0 && cmp(tmp,st,min) >=0 && cmp(tmp,st,max) <=0 )
			{
				print(tmp,st);
				return 1;
			}else
			{
				return 0;
			}
		}
		int sum = 0;
		byte k;
		if( st == -1 )
		{
			tmp[pos] = tmp[0];
			sum += m_cal(tmp,pos+1,pos);
		}
		for( k = '0'; k <= '9'; k++ )
		{
			tmp[pos] = k;
			sum += m_cal(tmp,pos+1,st);
		}
		return sum;
	}
	public int cal()
	{
		int sum = 0;
		byte tmp[] = new byte[min.length];
		
		int range = max[0] - min[0] + 1;
		int len = min.length;
		
		hm = new HashMap<String,Integer>();
		
		for( int i = 0; i<range;i++ )
		{
			tmp[0] = (byte) (min[0] + i);
			sum += l_cal(tmp,1,-1);
			sum += m_cal(tmp,1,-1);
		}
		
		
		return hm.size();
	}
	
	public String doChange(String in)
	{
		String[] test = in.split(" ");
		min = test[0].getBytes();
		max = test[1].getBytes();
		
		System.out.println(in);
		return Integer.toString(cal());
	}
	
	public void readAndOutput()
	{
		File file = new File("C-large.in");
		File out = new File("out.txt");
		BufferedReader reader = null;
		BufferedWriter writer = null;
		int i = 0;
        try {
        	reader = new BufferedReader(new FileReader(file));
        	writer = new BufferedWriter(new FileWriter(out));
            String temp;
            while ((temp = reader.readLine()) != null) {
            	
            	if( i == 0 )
            	{
            		i = 1;
            		continue;
            	}
        		writer.write("Case #" + i +": " + doChange(temp)+"\n");
        		i++;
            }
            reader.close();
            writer.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        
	}

}
