import java.io.FileInputStream;
import java.util.HashMap;
import java.util.Scanner;
import java.util.TreeSet;

// Recycled Numbers
// https://code.google.com/codejam/contest/1460488/dashboard#s=p2

public class C {

	private static String process(Scanner in) {
		int A = in.nextInt();
		int B = in.nextInt();
		int res = 0;
		int len = Integer.toString(A).length();
		for(int n = A; n < B; n++) {
			String str = Integer.toString(n);
			TreeSet<Integer> set = new TreeSet<Integer>();
			for(int i = 1; i < len; i++) {
				int m = Integer.parseInt(str.substring(i, len) + str.substring(0, i));
				if ( m > n && m <= B && ! set.contains(m) ) {
					set.add(m);
					res++;
				}
			}
		}
		return Integer.toString(res);
	}

	public static void main(String[] args) throws Exception {
		Scanner in = new Scanner(System.in.available() > 0 ? System.in : 
			new FileInputStream(Thread.currentThread().getStackTrace()[1].getClassName() + ".practice.in"));
		int T = in.nextInt();
		for(int i = 1; i <= T; i++) 
			System.out.format("Case #%d: %s\n", i, process(in));
	}
}

package info.m3o.gcj2012.recyclednumber;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

public class InputFileLoader {


	protected File infile;

	protected List<String> rawInputLines;

    public List<String> getRawInputLines() {
        if (rawInputLines == null) {
        	rawInputLines = new ArrayList<String>();
        }
        return this.rawInputLines;
    }



	InputFileLoader(String infilepath) {
		infile = new File(infilepath);
		assert infile.canRead() == true : "File " + infilepath
				+ " is not readable.";
	}


	public void readInputFile() {
		assert infile != null : "Infile is null.";
		assert infile.canRead() == true;
		
		FileReader fr;
		BufferedReader br;
		String str;
		if (infile.canRead()) {
			try {
				fr = new FileReader(infile);
				br = new BufferedReader(fr);
				str = br.readLine();
				while (str != null) {
					this.getRawInputLines().add(str);
					str = br.readLine();
				}
			} catch (FileNotFoundException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
				return;
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
				return;
			}
		}
	}

}
