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.PrintWriter;
import java.io.RandomAccessFile;
import java.util.Hashtable;

public class codejamb {

	/**
	 * @param args
	 * @throws IOException
	 * @throws NumberFormatException
	 */
	public static void main(String[] args) throws Exception {
		RandomAccessFile r = new RandomAccessFile("testcase.txt", "r");
		PrintWriter p = new PrintWriter("out.txt");
		int t = Integer.parseInt(r.readLine());
		for (int i = 1; i <= t; i++) {
			String[] line = (r.readLine()).split(" ");
			int a = Integer.parseInt(line[0]);
			int b = Integer.parseInt(line[1]);
			int count = countIt(a, b);
			p.println("Case #" + i + ": " + count);
		}
		p.close();

	}

	static int countIt(int a, int b) {
		int count = 0;
		for (int i = a; i <= b; i++) {
			for (int j = i + 1; j <= b; j++) {
				if (checkPair(i + "", j + "")) {
					count++;
				}
			}
		}
		return count;
	}

	static boolean checkPair(String x, String y) {
		if (x.length() == y.length() && isTheSame(x, y)) {
			for (int i = x.length() - 1; i >= 0; i--) {
				String sub = x.substring(i);
				// String sub2 = y.substring(0, sub.length());
				String newStr = sub + x.substring(0, i);
				if (newStr.equalsIgnoreCase(y))
					return true;
			}
			return false;
		} else {
			return false;
		}
	}

	static boolean isTheSame(String x, String y) {
		char[] xArr = x.toCharArray();
		char[] yArr = y.toCharArray();
		for (int i = 0; i < xArr.length; i++) {
			for (int j = 0; j < yArr.length; j++) {
				if (xArr[i] == yArr[j]) {
					xArr[i] = 0;
					yArr[j] = 0;
					break;
				}
			}
		}
		for (int i = 0; i < yArr.length; i++) {
			if (yArr[i] != 0 || xArr[i] != 0)
				return false;
		}
		return true;
	}

}
