import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.Arrays;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
import java.util.Set;

public class CopyOfCopyOfMain {

	static int ndigits(int n) {
		return (int) (Math.log10(n) + 1);
	}

	static int rot(int n, int dig) {
		return (int) ((n % 10) * Math.pow(10, dig - 1)) + (int) (n / 10);
	}

	public static void main(String[] args) throws FileNotFoundException {
		String file = "C-large";
		Scanner in = new Scanner(new File(file + ".in"));
		PrintWriter out = new PrintWriter(new File(file + ".out"));

		int T = in.nextInt();
		for (int t = 1; t <= T; t++) {
			int A = in.nextInt();
			int B = in.nextInt();

			int c = 0;
			int[] list = new int[ndigits(B)];
			numbers: for (int i = A; i <= B; i++) {
				int digs = ndigits(i);
				int rot = i;
				int pairs = 0;

				Arrays.fill(list, -1);
				list[0] = i;

				digits: for (int j = 1; j <= digs + 1; j++) {

					rot = rot(rot, digs);
					if(rot < i)
						continue;

					if (A <= rot && rot <= B) {
						for (int k = 0; k < j; k++) {
							if (list[k] == rot) {
								continue digits;
							}
						}
						pairs++;
						list[j] = rot;
					}
				}

				//c += pairs * (pairs + 1) / 2;
				c += pairs ;
				// c+=digs;
			}
			out.println("Case #" + t + ": " + c);
		}

		in.close();
		out.close();
	}
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package googleJamCode2;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.PrintWriter;
import java.util.*;

/**
 *
 * @author gollum1er
 */
public class Permutation {

    private String chemin = "C:\\Users\\gollum1er\\Desktop\\";

    public Integer moveNDigits(Integer nb, Integer nbDigitsToMove) {
        String strNb = nb.toString();
        String res = strNb.substring(strNb.length() - nbDigitsToMove, strNb.length()) + strNb.substring(0, strNb.length() - nbDigitsToMove);
        return Integer.parseInt(res);
    }

    public List<Integer> findAllPermutationsWithDigits(Integer nb, Integer nbDigitsToMove, Integer min, Integer max) {
        List<Integer> resListTmp = new ArrayList<Integer>();
        Integer tmpRes = this.moveNDigits(nb, nbDigitsToMove);
        if (tmpRes > nb && tmpRes >= min && tmpRes <= max) {
            resListTmp.add(tmpRes);
        }
        Set set = new HashSet();
        set.addAll(resListTmp);
        ArrayList resList = new ArrayList(set);
        return resList;
    }

    public List<Integer> findAllPermutations(Integer nb, Integer min, Integer max) {
        String strNb = nb.toString();
        List<Integer> resListTmp = new ArrayList<Integer>();
        for (int i = 1; i < strNb.length(); i++) {
            List<Integer> resListTmp2 = this.findAllPermutationsWithDigits(nb, i, min, max);
            resListTmp.addAll(resListTmp2);
        }
        Set set = new HashSet();
        set.addAll(resListTmp);
        ArrayList resList = new ArrayList(set);
        return resList;
    }

    public Integer findRes(int min, int max) {
        Integer res = 0;
        for (int i = min; i < max + 1; i++) {
            List<Integer> tmpList = this.findAllPermutations(i, min, max);
            res += tmpList.size();
        }
        return res;
    }
    
    //lecture pour le fichier de recherche
    public List readFile(String nFichier) {
        List<String> res = new ArrayList<String>();
        String nomFichier = chemin + nFichier;
        try {
            BufferedReader in = new BufferedReader(new FileReader(nomFichier));
            String line =in.readLine();
            while ((line = in.readLine()) != null) {
                res.add(line);
            }
            in.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
        return res;
    }

    //Ã©crit le rÃ©sultat des trie
    public void writeFile(List content, String nFichier) {
        String nomFichier = chemin + nFichier;
        try {
            PrintWriter out = new PrintWriter(new FileWriter(nomFichier));
            Iterator it = content.iterator();
            int cpt = 1;
            while (it.hasNext()) {
                String str = (String) it.next();
                out.println("Case #" + cpt + ": " +str);
                cpt++;
            }
            out.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }

    public static void main(String args[]) {
        Permutation pm = new Permutation();
        List inputList = pm.readFile("C-large.in");
        Iterator it = inputList.iterator();
        List resList = new ArrayList<String>();
        while (it.hasNext()) {
            String resTmp = (String)it.next();
            String str[] = resTmp.split(" ");
            Integer res = pm.findRes(Integer.parseInt(str[0]), Integer.parseInt(str[1]));
            resList.add(Integer.toString(res));
        }
        pm.writeFile(resList, "toto.txt");
    }
}
