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


public class Numbers {
	
	private static int [][] input;
	private static int [] output;
	
	public static void main(String [] args) throws NumberFormatException, IOException{
		
		readData();
		output = new int [input.length];
		
		for (int i=0 ; i< input.length ; i++){
			output[i] = numberOfPairs(input[i][0], input[i][1]);
		}
		
		writeData();
	}

	public static int numberOfPairs(int a, int b){
		int r=0;
		
		for (int i=a ; i<=b ; i++ )
		{
			
			String A = Integer.toString( i );
			int f = flip(A);
			int f2 = flip2(A);
			int f3 = flip3(A);
			int f4 = flip4(A);
			int f5 = flip5(A);
			int f6 = flip6(A);
			
			if ( i<f && a<=f && f<=b ){
				r++;
			
			}
			if (i>100){
				if ( i<f2 && a<=f2 && f2<=b && f2 !=f ){
					r++;
				
				}
			}
			
			if (i>1000){
				
				if ( i<f3 && a<=f3 && f3<=b && f2 !=f && f3 != f2 && f3 != f){
					r++;
			
						}			
				}	
			if (i>10000){
				
				if ( i<f4 && a<=f4 && f4<=b && f2 !=f && f3 != f2 && f3 != f && f4 !=f3 && f4!= f2 && f4 !=f )
					r++;
				}
			if (i>100000){
				
				if ( i<f5 && a<=f5 && f5<=b && f2 !=f && f3 != f2 && f3 != f && f4 !=f3 && f4!= f2 && f4 !=f
						&& f5 != f4 && f5 != f3 && f5!= f2 && f5 !=f)
					r++;
				}
			if (i>1000000){
				
				if ( i<f6 && a<=f6 && f6<=b && f2 !=f && f3 != f2 && f3 != f && f4 !=f3 && f4!= f2 && f4 !=f
						&& f5 != f4 && f5 != f3 && f5!= f2 && f5 !=f && f6 !=f5 && f6 != f4 && f6 != 3 && f6 != f2
						&& f6 !=f )
					r++;
				}
			
		}
		return r;
		
	}
	
	public static int flip(String A){
		
		if(A.length() < 2)
			return 0;
		String ans = A.substring( 1)+ A.substring( 0, 1 );
		return Integer.parseInt( ans );
	
	}
	public static int flip2(String A){
		if(A.length() <3 )
			return 0;
	
	String ans = A.substring( 2)+ A.substring( 0, 2 );
	return Integer.parseInt( ans );

	}
	
	public static int flip3(String A){
		if(A.length() < 4)
			return 0;
		
		String ans = A.substring( 3)+ A.substring( 0, 3 );
		return Integer.parseInt( ans );

		}
	public static int flip4(String A){
		if(A.length() < 5)
			return 0;
		String ans = A.substring( 4)+ A.substring( 0, 4 );
		return Integer.parseInt( ans );

		}
	public static int flip5(String A){
		if(A.length() <6 )
			return 0;
		
		String ans = A.substring( 5)+ A.substring( 0, 5 );
		return Integer.parseInt( ans );

		}
	public static int flip6(String A){
		if(A.length() < 7)
			return 0;
		
		String ans = A.substring( 6)+ A.substring( 0, 6 );
		return Integer.parseInt( ans );

		}
	
	public static void readData() throws NumberFormatException, IOException{
		FileReader fr = new FileReader("Input.txt");
		BufferedReader br = new BufferedReader(fr);
		int numberOfInputs = Integer.parseInt( br.readLine() );
		input = new int [numberOfInputs][2];
		for (int i = 0; i<numberOfInputs ; i++  ){
			String [] numbers = ((String)(br.readLine())).split( " " );   
			for (int j = 0 ; j<2 ;j++){
				input [i][j] =  Integer.parseInt(numbers [j]);
			}
		}
		br.close();
	}
	
	public static void writeData() throws IOException{
		FileWriter fw = new FileWriter("Output.txt");
		BufferedWriter bw = new BufferedWriter(fw);
		for (int i = 0; i< output.length ; i++ ){
			String out = "Case #" +(i+1) +": "+ output[i];
			bw.write( out );
			bw.newLine();
		}
		bw.close();
	}
}
