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.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashMap;


public class RecycledNumbers {
	static boolean isRecycled(int a, int b, int length) {
		String aString = String.valueOf(a);
		String bString = String.valueOf(b);
		
		for (int i = 0; i < length - 1; i++) {
//			System.out.println(aString.substring(length - 1 - i) + aString.substring(0, length - 1 - i));
			if (bString.equals(aString.substring(length - 1 - i) + aString.substring(0, length - 1 - i))) {
				return true;
			}
		}
		return false;
	}
	
	public static void main(String[] args) throws NumberFormatException, IOException {
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		int testCases = Integer.parseInt(br.readLine());
		HashMap<Integer, Integer> lengths = new HashMap<Integer,Integer>();
		for (int i = 1; i <= 2000000; i++) {
			lengths.put(i, String.valueOf(i).length());
		}
		for (int t = 1; t <= testCases; t++) {
			String[] ab  = br.readLine().split(" ");
			int a = Integer.parseInt(ab[0]);
			int b = Integer.parseInt(ab[1]);
			int aLog = ab[0].length() - 1;
			int bLog = ab[1].length() - 1;
			
			int count = 0;
			for (int i = a; i <= b; i++) {
				int iLength = lengths.get(i);
				for (int j = i + 1; j <= b; j++) {
					if (iLength != lengths.get(j)) {
						break;
					}
					if (isRecycled(i, j, iLength)) {
						count++;
					}
				}
			}
			
			
			System.out.println("Case #" + t + ": " + count);
			
		}
	}
}
