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 google.codejam;


import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;

public class Main {
  private static boolean debug = false;

  public static void main(String [] args){
    if(args!=null && args.length==2){
      FileInputStream fstream = null;
      try {
        fstream = new FileInputStream(args[0]);
     // Get the object of DataInputStream
        DataInputStream in = new DataInputStream(fstream);
        BufferedReader br = new BufferedReader(new InputStreamReader(in));
        String strLine;
        
        File file = new File(args[1]);

        FileWriter fstreamOut = new FileWriter(file.getAbsolutePath());
        BufferedWriter out = new BufferedWriter(fstreamOut);
        
        
        int lineNum = Integer.parseInt(br.readLine());
        
        GoogleSolver solver = new RecycledNumberSolver();
        //GooglereseSolver.calcualteMapping();
        
        
        for(int i=0 ; i<lineNum; i++){
          strLine = br.readLine();
          String resultStr = solver.solve(strLine);
          
          if(debug){            
            System.out.println (strLine + "->" + resultStr);
          }else{
            String output = "Case #"+(i+1) +": " + resultStr;
            System.out.println (output);
            out.write(output+"\n");
          }
        }
          
        out.close();
        in.close();
        
      } catch (Exception e) {
        // TODO Auto-generated catch block
        e.printStackTrace();
      }
      
    }
  }
}
