package jp.funnything.competition.util;

import java.math.BigInteger;

/**
 * Utility for BigInteger
 */
public class BI {
    public static BigInteger ZERO = BigInteger.ZERO;
    public static BigInteger ONE = BigInteger.ONE;

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

    public static BigInteger add( final BigInteger x , final long y ) {
        return add( x , v( y ) );
    }

    public static BigInteger add( final long x , final BigInteger y ) {
        return add( v( x ) , y );
    }

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

    public static int cmp( final BigInteger x , final long y ) {
        return cmp( x , v( y ) );
    }

    public static int cmp( final long x , final BigInteger y ) {
        return cmp( v( x ) , y );
    }

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

    public static BigInteger div( final BigInteger x , final long y ) {
        return div( x , v( y ) );
    }

    public static BigInteger div( final long x , final BigInteger y ) {
        return div( v( x ) , y );
    }

    public static BigInteger mod( final BigInteger x , final BigInteger y ) {
        return x.mod( y );
    }

    public static BigInteger mod( final BigInteger x , final long y ) {
        return mod( x , v( y ) );
    }

    public static BigInteger mod( final long x , final BigInteger y ) {
        return mod( v( x ) , y );
    }

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

    public static BigInteger mul( final BigInteger x , final long y ) {
        return mul( x , v( y ) );
    }

    public static BigInteger mul( final long x , final BigInteger y ) {
        return mul( v( x ) , y );
    }

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

    public static BigInteger sub( final BigInteger x , final long y ) {
        return sub( x , v( y ) );
    }

    public static BigInteger sub( final long x , final BigInteger y ) {
        return sub( v( x ) , y );
    }

    public static BigInteger v( final long value ) {
        return BigInteger.valueOf( value );
    }
}

import static java.lang.Math.*;
import static java.util.Arrays.*;
import static java.util.Collections.*;
import java.io.*;
import java.math.*;
import java.util.*;

@SuppressWarnings("unused")
public class C_RecycledNumbers {
	public static void main(String[] args) throws Exception {
		// Scanner in = new Scanner(System.in);
		// PrintStream out = System.out;
		Scanner in = new Scanner(new File("C-small.in"));
		PrintStream out = new PrintStream("C-small.out");
		// Scanner in = new Scanner(new File("C-large.in"));
		// PrintStream out = new PrintStream("C-large.out");
		int T = in.nextInt();
		for (int i = 1; i <= T; i++) {
			int A = in.nextInt();
			int B = in.nextInt();
			TreeSet<pair> set = new TreeSet<pair>();
			for (int n = A; n <= B; n++) {
				String s = Integer.toString(n);
				for (int j = 0; j <= s.length(); j++) {
					int m = Integer.parseInt(s.substring(j) + s.substring(0, j));
					if (A <= n && n < m && m <= B) {
						set.add(new pair(n, m));
					}
				}
			}
			out.println("Case #" + i + ": " + set.size());
		}
	}

	static class pair implements Comparable<pair> {
		int a, b;

		public pair(int a, int b) {
			this.a = a;
			this.b = b;
		}

		public int compareTo(pair p) {
			if (a == p.a)
				return b - p.b;
			return a - p.a;
		}
	}
}
