/*
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 * and open the template in the editor.
 */
package codejam;

/**
 *
 * @author eblanco
 */
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashSet;
import javax.swing.JFileChooser;

public class RecycledNumbers {

    public static String DatosArchivo[] = new String[10000];

    public static int[] convertStringArraytoIntArray(String[] sarray) throws Exception {
        if (sarray != null) {
            int intarray[] = new int[sarray.length];
            for (int i = 0; i < sarray.length; i++) {
                intarray[i] = Integer.parseInt(sarray[i]);
            }
            return intarray;
        }
        return null;
    }

    public static boolean CargarArchivo(String arch) throws FileNotFoundException, IOException {
        FileInputStream arch1;
        DataInputStream arch2;
        String linea;
        int i = 0;

        if (arch == null) {
            //frame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
            JFileChooser fc = new JFileChooser(System.getProperty("user.dir"));
            int rc = fc.showDialog(null, "Select a File");
            if (rc == JFileChooser.APPROVE_OPTION) {
                arch = fc.getSelectedFile().getAbsolutePath();
            } else {
                System.out.println("No hay nombre de archivo..Yo!");
                return false;
            }
        }
        arch1 = new FileInputStream(arch);
        arch2 = new DataInputStream(arch1);
        do {
            linea = arch2.readLine();
            DatosArchivo[i++] = linea;
            /* if (linea != null) {
            System.out.println(linea);
            }*/
        } while (linea != null);
        arch1.close();
        return true;
    }

    public static boolean GuardaArchivo(String arch, String[] Datos) throws FileNotFoundException, IOException {
        FileOutputStream out1;
        DataOutputStream out2;
        int i;
        out1 = new FileOutputStream(arch);
        out2 = new DataOutputStream(out1);

        for (i = 0; i < Datos.length; i++) {
            if (Datos[i] != null) {
                out2.writeBytes(Datos[i] + "\n");
            }
        }
        out2.close();
        return true;
    }

    public static void echo(Object msg) {
        System.out.println(msg);
    }

    public static void main(String[] args) throws IOException, Exception {
        String[] res = new String[10000], num = new String[2];
        int i, j, k, ilong;
        int ele = 1;
       ArrayList al = new ArrayList();
        String FName = "C-small-attempt0",  istr, irev, linea;
        if (CargarArchivo("C:\\eblanco\\Desa\\CodeJam\\Code Jam\\test\\" + FName + ".in")) {
            for (j = 1; j <= Integer.parseInt(DatosArchivo[0]); j++) {
                linea = DatosArchivo[ele++];
                num = linea.split(" ");
                   al.clear();
                // echo("A: "+num[0]+" B: "+num[1]);
                for (i = Integer.parseInt(num[0]); i <= Integer.parseInt(num[1]); i++) {
                    istr = Integer.toString(i);
                    ilong = istr.length();
                 
                    for (k = 1; k < ilong; k++) {
                        if (ilong > k) {
                            irev = istr.substring(istr.length() - k, istr.length()) + istr.substring(0, istr.length() - k);
                            //echo("caso: " + j + ": isrt: " + istr + " irev: " + irev);
                            if ((Integer.parseInt(irev) > Integer.parseInt(num[0])) && (Integer.parseInt(irev) > Integer.parseInt(istr)) && (Integer.parseInt(irev) <= Integer.parseInt(num[1]))) {
                                al.add("(" + istr + "," + irev + ")");
                            }
                        }
                    }
                }
                HashSet hs = new HashSet();
                hs.addAll(al);
                al.clear();
                al.addAll(hs);
                res[j] = "Case #" + j + ": " + al.size();
                echo(res[j]);
                LeerArchivo.GuardaArchivo("C:\\eblanco\\Desa\\CodeJam\\Code Jam\\test\\" + FName + ".out", res);
            }
        }
    }
}

import java.io.BufferedReader;
import java.io.FileReader;
import java.sql.Array;
import java.util.ArrayList;
import java.util.concurrent.BlockingDeque;

public class RN {

    public static void main (String[] args) throws Exception
    {

		BufferedReader sr = new BufferedReader(new FileReader("c:\\Projects\\RN.txt"));

		int total = Integer.parseInt(sr.readLine());

        for (int i=0; i<total; i++)
        {
            String[] tokens = sr.readLine().split(" ");
            int A = Integer.parseInt (tokens[0]);
            int B = Integer.parseInt (tokens[1]);


            int res = solve (A, B);
            System.out.printf("Case #%d: %d\n", i+1, res);

        }
    }

    private static int[] decimals (int A)
    {
        int rest = A;
        int num = 0;

        while (rest > 0)
        {
            rest = rest / 10;
            num++;
        }

        int[] result = new int[num];
        for (int i=0; i<num; i++)
        {
            result[num-i-1] = A % 10;
            A = A / 10;
        }

        return result;
    }

    private static int toNumber (int[] dec, int offset)
    {

        int total1 = 0;
        for (int i=0; i<offset; i++)
        {
            total1 = total1 * 10 + dec[i];
        }

        int total2 = 0;
        for (int i=offset; i<dec.length; i++)
        {
            total2 = total2 *10 + dec[i];
        }

        return total1 + total2 * (int)Math.pow(10, offset);
    }


    public static int solve (int A, int B)
    {
        if (B <= A) return 0;

        int[] decA = decimals(A);
        int[] decB = decimals(B);

        if (decA.length < decB.length)
        {
            int border = (int) Math.pow(10, decA.length) - 1;
            return solve(A, border) + solve(border+1, B);
        }

        int total = 0;
        for (int Curr = A; Curr < B; Curr++)
        {
            int[] dec = decimals(Curr);

            //int[] variants = new int[dec.length];
            ArrayList<Integer> variants = new ArrayList<Integer>();
            int first = dec[0];
            for (int i=1; i<dec.length; i++)
            {
                if (dec[i] >= first)
                {
                    int candidate = toNumber(dec, i);
                    if (candidate > Curr &&
                        candidate <= B)
                    {
                        if (!variants.contains(candidate))
                        {
                            variants.add(candidate);
                            total++;
                        }
                    }
                }
            }
        }
        return total;
    }
}
