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 jp.funnything.competition.util;

import java.math.BigDecimal;

/**
 * Utility for BigDeciaml
 */
public class BD {
    public static BigDecimal ZERO = BigDecimal.ZERO;
    public static BigDecimal ONE = BigDecimal.ONE;

    public static BigDecimal add( final BigDecimal x , final BigDecimal y ) {
        return x.add( y );
    }

    public static BigDecimal add( final BigDecimal x , final double y ) {
        return add( x , v( y ) );
    }

    public static BigDecimal add( final double x , final BigDecimal y ) {
        return add( v( x ) , y );
    }

    public static int cmp( final BigDecimal x , final BigDecimal y ) {
        return x.compareTo( y );
    }

    public static int cmp( final BigDecimal x , final double y ) {
        return cmp( x , v( y ) );
    }

    public static int cmp( final double x , final BigDecimal y ) {
        return cmp( v( x ) , y );
    }

    public static BigDecimal div( final BigDecimal x , final BigDecimal y ) {
        return x.divide( y );
    }

    public static BigDecimal div( final BigDecimal x , final double y ) {
        return div( x , v( y ) );
    }

    public static BigDecimal div( final double x , final BigDecimal y ) {
        return div( v( x ) , y );
    }

    public static BigDecimal mul( final BigDecimal x , final BigDecimal y ) {
        return x.multiply( y );
    }

    public static BigDecimal mul( final BigDecimal x , final double y ) {
        return mul( x , v( y ) );
    }

    public static BigDecimal mul( final double x , final BigDecimal y ) {
        return mul( v( x ) , y );
    }

    public static BigDecimal sub( final BigDecimal x , final BigDecimal y ) {
        return x.subtract( y );
    }

    public static BigDecimal sub( final BigDecimal x , final double y ) {
        return sub( x , v( y ) );
    }

    public static BigDecimal sub( final double x , final BigDecimal y ) {
        return sub( v( x ) , y );
    }

    public static BigDecimal v( final double value ) {
        return BigDecimal.valueOf( value );
    }
}
