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

package Happy;
import java.io.*;
import java.math.*;
import java.lang.*;
import java.util.*;
import java.util.Arrays.*;
import java.io.BufferedReader;
//import java.io.IOException;
//import java.io.InputStreamReader;
//import java.io.PrintWriter;
//import java.util.StringTokenizer;

/**
 *
 * @author ipoqi
 */
public class Happy {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        new Happy().haha();
    }

    public void haha() {
        BufferedReader in = null;
        BufferedWriter out = null;
        try{
            in = new BufferedReader(new FileReader("C-large.in"));
            out = new BufferedWriter(new FileWriter("LLL.out"));
            int T = Integer.parseInt(in.readLine());
            System.out.println("T="+T);

            //LinkedList<Integer> mm = new LinkedList<Integer>();
            //mm.add(new LinkedList<Integer>());
           //int[][] mm;
           //for(int ii=0;ii<mm.length;ii++){
           //     mm[0][ii] = 1;
           //}


            for(int i=0;i<T;i++){
                String[] line = in.readLine().split(" ");
                int A = Integer.parseInt(line[0]);
                int B = Integer.parseInt(line[1]);
                //System.out.print(" A = "+A+"\n");
                //System.out.print(" B = "+B+"\n");

                int ans = 0;

                
                for(int j=A;j<B;j++){
                    int n=j;
                    if(n>=10){
                        String N = Integer.toString(n);
                        int nlen = N.length();
                        List<Integer> oks = new ArrayList<Integer>();
                        for(int k=0;k<nlen-1;k++){
                            String M = "";
                            for(int kk=1;kk<=nlen;kk++){
                                 M = M + N.charAt((k+kk)%nlen);
                            }
                            int m = Integer.parseInt(M);
                            //System.out.print(" N = "+N+"\n");
                            //System.out.print(" M = "+M+"\n");

                            if(m>n && m<=B) {
                                boolean isNewOne = true;
                                for(int kkk=0;kkk<oks.size();kkk++){
                                    //System.out.print(" KKK = "+oks.get(kkk)+"\n");
                                    if(m==oks.get(kkk)){
                                        isNewOne = false;
                                    }
                                }
                                if(isNewOne){
                                    //System.out.print(" N = "+N+"\n");
                                    //System.out.print(" M = "+M+"\n");
                                    oks.add(m);
                                    ans++;
                                }
                            }
                        }
                    }
                }
                out.write("Case #"+(i+1)+": "+ans+"\n");
                System.out.print("Case #"+(i+1)+": "+ans+"\n");
            }
            in.close();
            out.close();
        }catch(Exception e){
            e.printStackTrace();
            try{
                in.close();
                out.close();
            }catch(Exception e1){
                e1.printStackTrace();
            }
        }
        System.out.print("YES!\n");
    }

}
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.util.Collection;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;




public class RecycleNumber {


	String[] result = new String[9000];
	int testCases = 0;

	private static int shift(int in, int shift){
		int mul = 1;
		for(int k = 1; k <= shift; k++){
			mul *= 10;
		}
		int l = in%mul;
		if(l == 0) return -1;
		int mid = in/mul;
		int c = Integer.valueOf(l+""+mid);
		return c;
	}
	public static void main(String[] args)throws Exception{
		RecycleNumber bp = new RecycleNumber();
		InputVectorSequenceRecycleNumber iv = InputVectorSequenceRecycleNumber.readFileToCreateInputVector(true);

		bp.testCases = Integer.parseInt(iv.inp[0][0]);

		for(int n = 0 ; n < bp.testCases; n++){
			int lowerbound = Integer.parseInt(iv.inp[n+1][0]);
			int upperbound = Integer.parseInt(iv.inp[n+1][1]);
			int count = 0;

			for(int i = lowerbound; i <= upperbound; i++){
				Set<Integer> unique = new HashSet<Integer>();
				for(int j = 1 ; j < String.valueOf(i).length(); j++){
					int y = shift(i, j);
					if(y == -1) continue;
					if(y > i && y <= upperbound && !unique.contains(y)){
						unique.add(y);
						count++;
					}
				}
			}

			bp.result[n] = "Case #"+(n+1)+":"+" "+count;
		}

		bp.outputFile();
	}




	public void outputFile() throws IOException{
		FileWriter fos = new FileWriter ("C:/workspace/googleCJ/google/input/c.txt");
		BufferedWriter bw = new BufferedWriter(fos);
		for(int i =0; i< testCases; i++){
			bw.write(result[i]);
			bw.write("\r\n");
		}
		bw.close();

	}

}

class InputVectorSequenceRecycleNumber{
	private static int DATA_LENGTH = 9000;
	public int lines = -1;
	public String[][] inp = new String[DATA_LENGTH][];
	String[] result = new String[DATA_LENGTH];

	private InputVectorSequenceRecycleNumber(){

	}

	public static InputVectorSequenceRecycleNumber readFileToCreateInputVector(boolean splitLineBySpace) throws IOException{

		BufferedReader br = new BufferedReader(new FileReader ("C:/workspace/googleCJ/google/input/b.txt"));
		String str = null;
		InputVectorSequenceRecycleNumber iv = new InputVectorSequenceRecycleNumber();

		while ((str = br.readLine()) != null) {
				iv.lines++;
		        iv.inp[iv.lines] = process(str, splitLineBySpace);
		}

		return iv;
	}

	private static String[] process(String str, boolean splitLineBySpace) {
		String[] ret = null;
		if(splitLineBySpace){
			ret = str.split("\\ ");
		}else{
			ret = new String[]{str};
		}
	 return ret;
	}


}
