/*
 * 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.ArrayList;
import java.util.List;


public class C {
    public static void main(String args[]){
    	String fn="C:\\codejam\\C.in";
        String fnOut="C:\\codejam\\C.out";
try{
	BufferedReader br = new BufferedReader(new FileReader(fn));
	BufferedWriter bw = new BufferedWriter(new FileWriter(fnOut));
	String line = null;
	int NCase = Integer.valueOf(br.readLine().trim());
	long stime = System.currentTimeMillis();
	for(int icase=0;icase<NCase;icase++){
		String[] a = toStringArray(br.readLine());
		int buf = procesar(a);
		String out = "Case #"+(icase+1)+": "+buf;
		bw.write(out,0,out.length());
		bw.newLine();
		long ctime = System.currentTimeMillis();
                        System.out.println(out);
		//System.out.println(String.format("--- Done: #%2d,%3.0fs, ends in:%2.1fm",(icase+1),(ctime-stime)*0.001,(ctime-stime)*0.001/60*NCase/(icase+1)));
	}
	br.close();
	bw.close();
}catch(IOException ex){
	System.out.println(ex);
}
    	
    }
    
    
    
    static String[] toStringArray(String line){
        String[] p = line.trim().split("\\s+");
        //int[] out = new int[p.length];
        //for(int i=0;i<out.length;i++) out[i] = Integer.valueOf(p[i]);
        return p;
}



	static public int procesar(String nums[]){
    	int x = 0;
    	long A = new Long(nums[0]);
    	long B = new Long(nums[1]);

    	for(long i = A; i<= B; i++){
    		
    		List<Long> num = new ArrayList<Long>();
    		
    		for(long j = 1; j<(new Long(A).toString()).length(); j++){
    			
    			long p1 = (long) (i/(Math.pow(10,j)));
    			long p2 = (long) (i%(Math.pow(10,j)));
    			long pn = new Long(p2+""+p1);
    			//System.out.println("Aca " + pn );
    			if(pn>i&&pn<=B){
    				if(!num.contains(pn)){
    					num.add(pn);
    					x++;
    				}
    				System.out.println(x + " - " + i +  ": " + pn);
    			}

    		}
    	}
    	return (x);
    }
}
