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.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;


public class RecycledNumbers {

	public static void main(String[] args){
		try{
			// Open the file that is the first 
			// command line parameter
			FileInputStream fstream = new FileInputStream(args[0]);
			// Get the object of DataInputStream
			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
			String strLine;
			//Read File Line By Line
			int numTest = Integer.parseInt(br.readLine());
			for(int i = 0; i < numTest; i ++){
				String str = br.readLine();
				String numbers[] = str.split(" ");
				int count = recycledNumbers(Integer.parseInt(numbers[0]),Integer.parseInt(numbers[1]));
				int x = i + 1;
				System.out.println("Case #" + x + ": " + count);
				
			}
			//Close the input stream
			in.close();
		}catch (Exception e){//Catch exception if any
			System.err.println("Error: " + e.getMessage());
		}
		
		
	}
	
	public static int recycledNumbers(int min, int max){
		int digits = Integer.toString(min).length();
		int current = min;
		int count = 0;
		while(current <= max){
			ArrayList<Integer> newNumbers = new ArrayList<Integer>();
			for(int i = 1; i < digits; i++){
				String movedDigits = Integer.toString(current).substring(i);
				String remainingDigits;
				if(i == 1){
					remainingDigits = Character.toString(Integer.toString(current).charAt(0));
				}
				else{
					remainingDigits = Integer.toString(current).substring(0,i);
				}
				int newNumber = Integer.parseInt(movedDigits + remainingDigits);
				if(newNumber != current && newNumber <= max && newNumber >= min ){
					boolean alreadyExists = false;
					for(Integer no : newNumbers){
						if(no.intValue() == newNumber){
							alreadyExists = true;
						}
					}
					if(!alreadyExists){
						if(current < newNumber){
							count ++;
							//System.out.println("(" + current + "," + newNumber + ")");
							newNumbers.add(new Integer(newNumber));
						}
					}
				}
				
			}
			current++;
		}
		
		return count;
	}
	
}




