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.FileReader;
import java.io.FileWriter;
import java.io.PrintWriter;

public class Recycled {

	public static void main(String[] args) throws Exception {
		
//		if(true){
//			System.out.println(recycle("12345", 4));
//			return;
//		}

		BufferedReader in = new BufferedReader(new FileReader("recycled.in"));
		PrintWriter out = new PrintWriter(new FileWriter("recycled.out"));

		String lineStr;
		int T;
		long A, B, result, n, m;

		T = Integer.parseInt(in.readLine());

		for (int line = 1; line <= T; line++) {
			// get input
			lineStr = in.readLine();
			String[] fields = lineStr.split(" ");
			A = Long.parseLong(fields[0]);
			B = Long.parseLong(fields[1]);

			// compute result
			result = 0;
			for (n = A; n < B; n++) {
				for (m = A + 1; m <= B; m++) {
					if (isRecyled(n, m)) {
						result++;
					}
				}
			}

			// edit result
			out.println("Case #" + line + ": " + result);
			System.out.println(lineStr + " : " + result);
		}

		in.close();
		out.close();
	}

	private static boolean isRecyled(long n, long m) {
		// condition n<m
		if (m <= n) {
			return false;
		}
		String strN = String.valueOf(n);
		String strM = String.valueOf(m);
		// condition more than one digit
		if (strN.length() == 1 || strM.length() == 1) {
			return false;
		}
		int digitCount = strN.length();
		for (int i = 1; i < digitCount; i++) {
			String recycledN = recycle(strN, i);
			if (recycledN.equals(strM)) {
				return true;
			}
		}
		return false;
	}

	/**
	 * Move i digits from back of X to the front
	 * 
	 * @param X
	 * @param i
	 * @return
	 */
	private static String recycle(String X, int i) {
		int len = X.length();
		String head = X.substring(0, len - i);
		String tail = X.substring(len - i, len);
		//System.out.println(X+" = "+head+" + "+tail + " len="+len);
		return tail.concat(head);
	}
}
