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 mgg.main;

import mgg.problems.ProblemC;
import mgg.utils.FileUtil;


public class Main {

//	public final static String inFileName = ProblemA.EXAMPLE_IN;
//	public final static String outFileName = ProblemA.EXAMPLE_OUT;
//	public final static String inFileName = ProblemA.A_SMALL_IN;
//	public final static String outFileName = ProblemA.A_SMALL_OUT;
	
//	public final static String inFileName = ProblemB.EXAMPLE_IN;
//	public final static String outFileName = ProblemB.EXAMPLE_OUT;
//	public final static String inFileName = ProblemB.B_SMALL_IN;
//	public final static String outFileName = ProblemB.B_SMALL_OUT;
//	public final static String inFileName = ProblemB.B_LARGE_IN;
//	public final static String outFileName = ProblemB.B_LARGE_OUT;
	
//	public final static String inFileName = ProblemC.EXAMPLE_IN;
//	public final static String outFileName = ProblemC.EXAMPLE_OUT;
	public final static String inFileName = ProblemC.C_SMALL_IN;
	public final static String outFileName = ProblemC.C_SMALL_OUT;
//	public final static String inFileName = ProblemC.C_LARGE_IN;
//	public final static String outFileName = ProblemC.C_LARGE_OUT;
	

	
	public final static String delim = " ";

	public static void main(String[] args) {

		FileUtil util = new FileUtil(inFileName, outFileName);

		String firstLine = util.getLine();
		System.out.println("FIRST LINE: '" + firstLine + "'");

		int numLines = Integer.parseInt(firstLine);
		//System.out.println("NUMBER OF LINES: " + numLines);
		
		String result;
		
		for	(int i = 1; i <= numLines; i++) {
			
			System.out.println("----------------------------------------------------");
			
			System.out.println("Case #" + i);
			
//			result = ProblemA.solve(util);
//			result = ProblemB.solve(util);
			result = ProblemC.solve(util);
//			result = ProblemD.solve(util);
			
			util.printLine(i, result);
			
		}
		util.closeFiles();
	}

}
