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.util.Scanner;


public class C_RecycledNumbers {

	static int[] bases = {0, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000};
	static int digits(int value) {
		int i = 0;
		for (; i < bases.length && value >= bases[i]; i++);
		return i;
	}
	
	static int shift(int value, int len) {
		int last = value % 10;
		return (int)(Math.pow(10, len - 1)) * last + (value / 10);
	}
	
	
	static int countRecycled(int value, int B) {
		int shifted = value;
		int len = digits(value);
		int[] cache = new int[len];
		int ck = 0;
out:	for (int i = 0; i < len - 1; i++) {
			shifted = shift(shifted, len);
			
			if (shifted > value && shifted <= B) {
				for (int j = 0; cache[j] != 0; j++)
					if (cache[j] == shifted)
						continue out;	
				//System.out.println("n=" + value + ", m=" + shifted);
				cache[ck++] = shifted;
			}
		}
		return ck;
	}
	
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		/*int A = 1;
		int B = 500;
		int count = 0;
		for (int val = A; val <= B; val++) {
			count += countRecycled(val, B);
		}
		System.out.println(count);*/
		
		Scanner scan = new Scanner(System.in);
		int test = scan.nextInt();
		for (int t = 1; t <= test; t++) {
			int A = scan.nextInt();
			int B = scan.nextInt();
			int count = 0;
			for (int val = A; val <= B; val++) {
				count += countRecycled(val, B);
			}
			System.out.println("Case #" + t + ": " + count);
		}
	}
}
