package jp.funnything.competition.util;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
import java.math.BigDecimal;
import java.math.BigInteger;

import org.apache.commons.io.IOUtils;

public class QuestionReader {
    private final BufferedReader _reader;

    public QuestionReader( final File input ) {
        try {
            _reader = new BufferedReader( new FileReader( input ) );
        } catch ( final FileNotFoundException e ) {
            throw new RuntimeException( e );
        }
    }

    public void close() {
        IOUtils.closeQuietly( _reader );
    }

    public String read() {
        try {
            return _reader.readLine();
        } catch ( final IOException e ) {
            throw new RuntimeException( e );
        }
    }

    public BigDecimal[] readBigDecimals() {
        return readBigDecimals( " " );
    }

    public BigDecimal[] readBigDecimals( final String separator ) {
        final String[] tokens = readTokens( separator );

        final BigDecimal[] values = new BigDecimal[ tokens.length ];
        for ( int index = 0 ; index < tokens.length ; index++ ) {
            values[ index ] = new BigDecimal( tokens[ index ] );
        }

        return values;
    }

    public BigInteger[] readBigInts() {
        return readBigInts( " " );
    }

    public BigInteger[] readBigInts( final String separator ) {
        final String[] tokens = readTokens( separator );

        final BigInteger[] values = new BigInteger[ tokens.length ];
        for ( int index = 0 ; index < tokens.length ; index++ ) {
            values[ index ] = new BigInteger( tokens[ index ] );
        }

        return values;
    }

    public int readInt() {
        final int[] values = readInts();

        if ( values.length != 1 ) {
            throw new IllegalStateException( "Try to read single interger, but the line contains zero or multiple values" );
        }

        return values[ 0 ];
    }

    public int[] readInts() {
        return readInts( " " );
    }

    public int[] readInts( final String separator ) {
        final String[] tokens = readTokens( separator );

        final int[] values = new int[ tokens.length ];
        for ( int index = 0 ; index < tokens.length ; index++ ) {
            values[ index ] = Integer.parseInt( tokens[ index ] );
        }

        return values;
    }

    public long readLong() {
        final long[] values = readLongs();

        if ( values.length != 1 ) {
            throw new IllegalStateException( "Try to read single interger, but the line contains zero or multiple values" );
        }

        return values[ 0 ];
    }

    public long[] readLongs() {
        return readLongs( " " );
    }

    public long[] readLongs( final String separator ) {
        final String[] tokens = readTokens( separator );

        final long[] values = new long[ tokens.length ];
        for ( int index = 0 ; index < tokens.length ; index++ ) {
            values[ index ] = Long.parseLong( tokens[ index ] );
        }

        return values;
    }

    public String[] readTokens() {
        return readTokens( " " );
    }

    public String[] readTokens( final String separator ) {
        return read().split( separator );
    }
}

package gcj2012;

import java.io.FileInputStream;
import java.io.PrintStream;
import java.util.Scanner;
import java.util.Set;
import java.util.TreeSet;

public class C {

	public static void main(String[] args) throws Exception {
		new C().run();
	}

	void run() throws Exception {
		Scanner in = new Scanner(System.in);
		in = new Scanner(new FileInputStream("C-small-attempt0.in"));
		// in = new Scanner(new FileInputStream("C-large.in"));
		PrintStream out = System.out;
		out = new PrintStream("C-small-attempt0.out");
		// out = new PrintStream("C-large.out");

		int T = in.nextInt();
		for (int x = 1; x <= T; x++) {
			int A = in.nextInt();
			int B = in.nextInt();
			out.printf("Case #%d: %d\n", x, countRecycled(A, B));
		}

	}

	private int countRecycled(int a, int b) {
		int res = 0;
		int p0 = 1;
		while (p0 < b)
			p0 *= 10;
		for (int s = a; s <= b; s++)
			res += countRecycledStartingBy(a, b, s, p0);
		return res;
	}

	private int countRecycledStartingBy(int a, int b, int s, int p0) {
		int p = 1;
		Set<Integer> recs = new TreeSet<Integer>();
		while (p < 1000000) {
			int end = s % p;
			int beg = s / p;
			int rec = end * p0 + beg;
			if (rec >= a && rec <= b && rec != s && s < rec) recs.add(rec);
			p *= 10;
			p0 /= 10;
		}
		return recs.size();
	}

}
