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 );
    }
}


import java.io.IOException;
import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.Map;
import java.util.TreeMap;
import java.util.Set;
import java.util.TreeSet;

class RecycledNumbers {

    private static int[] primeMap = new int[] {
        2, 3, 5, 7, 11, 13, 17, 19, 23, 29
    };

    public static void main(String[] args) 
        throws IOException {
        
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));
        int n = Integer.parseInt(reader.readLine());
        
        for (int i = 0; i < n; i++) {
            int counter = 0;
            String[] line = reader.readLine().split(" ");
            int down = Math.max(10, Integer.parseInt(line[0]));
            int up = Integer.parseInt(line[1]);
            int tren = down;
            while (tren < up) {
                int limit = Math.min(up, (int) Math.pow(10, Math.ceil(Math.log10(tren + .1))));
                Map<Long, Set<String>> numbers = new TreeMap<Long, Set<String>>();
                for (; tren <= limit; tren++) {
                    long hash = hash(tren);
                    if (!numbers.containsKey(hash)) { numbers.put(hash, new TreeSet<String>()); }
                    numbers.get(hash).add(Integer.toString(tren));
                }
                
                for (Long key : numbers.keySet()) {
                    String[] vals = numbers.get(key).toArray(new String[] { });
                    for (int j = 0; j < vals.length - 1; j++) {
                        for (int k = j + 1; k < vals.length; k++) {
                            String first = vals[j];
                            String second = vals[k] + vals[k];
                            if (second.indexOf(first) != -1) {
                                counter++;
                            }
                        }
                    }
                }
            }
            System.out.println("Case #" + (i + 1) + ": " + counter);
        }
        
    }
    
    private static long hash(int in) {
        long tmp = 1;
        while (in > 0) {
            tmp *= primeMap[in % 10];
            in /= 10;
        }
        return tmp;
    }

}