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.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.Writer;
import java.util.ArrayList;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;



public class RecycledNumbers{
	public static void main(String[] args) throws IOException{
		String testCases;
		BufferedReader brTestCases = new BufferedReader(new InputStreamReader(System.in));
		File inFile = new File("C:/Users/AbhilashR/Downloads/C-large.in" ); 
		Scanner sc = new Scanner(inFile);
		//testCases = (String)brTestCases.readLine();
		testCases = sc.nextLine();
		Integer noOfTestCases = null;
		try{
			noOfTestCases = Integer.parseInt(testCases);
		}catch (NumberFormatException e){
			System.out.println("The entered value is not a Number");
		}
		ArrayList<String> inputData = new ArrayList<String>();
		for(int i =0;i<noOfTestCases;i++){
			brTestCases = new BufferedReader(new InputStreamReader(System.in));
			//testCases = (String)brTestCases.readLine();
			testCases = sc.nextLine();
			inputData.add(testCases);
		}
		
		ArrayList<Object[]> inputDataObj = new ArrayList<Object[]>();
		for(int i =0;i<inputData.size();i++){
			inputDataObj.add(inputData.get(i).split(" "));
		}
		Writer output = null;
		File outFile = new File("C:/Users/AbhilashR/Downloads/outPut.txt" );
		output = new BufferedWriter(new FileWriter(outFile));
		String text = "";
		for(int i =0;i < inputDataObj.size();i++){
			Object[] dataObj = inputDataObj.get(i);
			int integerA = Integer.parseInt((String)dataObj[0]);
			int integerB = Integer.parseInt((String)dataObj[1]);
			int recycledNumbers = getRecycledNumbers(integerA, integerB);
			text = "Case #"+(i+1)+": "+recycledNumbers+"\r\n";
			output.write(text);
			output.flush();
			
		}
		//output.write(text);
		output.close();
	}
	public static Integer getRecycledNumbers(Integer a,Integer b){
		Integer noOfRecycledNumbers = 0;
		Integer sampleN =a;
		
		Integer numberOfDigits = 0;
		numberOfDigits = Integer.toString(a).length();
		for(sampleN =a; sampleN < b ;sampleN++){
			Integer sampleM = sampleN;
			Set<Integer> tempSet = new HashSet<Integer>();
			for(int j =0; j< numberOfDigits; j++){
				int currentSize = Integer.toString(sampleM).length();
				if(currentSize==numberOfDigits){
					sampleM = Integer.parseInt(Integer.toString(sampleM%10)+Integer.toString(sampleM/10));
				}else{
					String formingSampleM = Integer.toString(sampleM%10);
					for(int k =0;k<numberOfDigits-currentSize;k++){
						formingSampleM = formingSampleM+"0";
					}
					formingSampleM = formingSampleM+Integer.toString(sampleM/10);
					sampleM = Integer.parseInt(formingSampleM);
				}
				if(sampleN<sampleM && sampleM<=b){
					tempSet.add(sampleM);
				}
			}	
			noOfRecycledNumbers += tempSet.size();
		}
		if(noOfRecycledNumbers>0){
			return noOfRecycledNumbers;
		}
		return 0;
	}
	
}