import java.io.*;

class code1
{
	public static void main(String args[]) throws Exception 
	{
		File ii = new File ("C-small-attempt1.in");
		FileInputStream fis = new FileInputStream(ii);
		BufferedReader  br = new BufferedReader(new InputStreamReader (fis));
		int cases = Integer.parseInt(br.readLine());
		FileOutputStream fout = new FileOutputStream ("output.txt");
		DataOutputStream dout = new DataOutputStream (fout);
		int total=0;
		for(int i=0;i<cases;i++){
		String temp = br.readLine();
		String parts [] = temp.split(" ");
		int lower = Integer.parseInt(parts[0]);
		int upper = Integer.parseInt(parts[1]);
		System.out.println(lower+" "+upper);
		
		for(int j=lower;j<=upper;j++)
		{
			int abc = j;int length=0;
			if(j<10)continue;
			while (abc!=0){abc/=10;length++;}
			abc=j;
			for(int m=0;m<length-1;m++){
				int shift = abc%10;
				abc=abc/10;
				System.out.println("hi "+j);
				abc=abc+shift*power(10,length-1);
				if(abc<=upper&&shift!=0&&abc>j)total++;
				System.out.println(total);
			}
		}
 		dout.writeBytes("Case #"+(i+1)+ ": "+total+"\n");
 		total=0;
		}//for close
		
	}

	private static int power(int i, int j) {
		int no=1;
		for(int a=0;a<j;a++){no=10*no;}
		return no;
	}
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileWriter;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;
import java.util.StringTokenizer;

public class Recycle
{

    static String shiftRight( String s )
    {
        String res = "" +  s.charAt( s.length() - 1 );
        res = res + s.substring( 0, s.length()-1 );

        return res;
    }

    static int solve( int a, int b )
    {
        HashSet<String> h = new HashSet();
        int res = 0;

        for( int i=a; i<=b; i++ )
        {
            String curr = Integer.toString(i);
            if( h.contains( curr ) )
                continue;

            // else compute number of shifts
            HashSet<String> temp = new HashSet();
            String s = curr;
            temp.add( curr );
            h.add( curr);

            for( int j=0; j<curr.length()-1; j++ )
            {
                s = shiftRight( s );

                // check for leading zeroes

                if( s.charAt(0) == '0')
                    continue;

                // check if valid range
                int x = Integer.parseInt( s );

                if( ( x>=a ) && (  x<=b ))
                {
                    temp.add(s);
                    h.add( s );
                }
            }

            // now count how many such pairs ( n choose 2 = n( n-1 )/2 )

            int k = temp.size();
            res += k*( k-1 )/2;

        }

        return res;

    }

    public static void main( String[] args ) throws IOException
    {
        FileWriter fr= new FileWriter("/home/gowri/Desktop/out.txt");
        BufferedWriter out = new BufferedWriter( fr );
        BufferedReader br = new BufferedReader( new InputStreamReader( System.in ));
        int t = Integer.parseInt( br.readLine() );
        StringTokenizer tok;

        for( int i=0; i<t; i++ )
        {
            String s = br.readLine();
            tok = new StringTokenizer( s );
            
            int A = Integer.parseInt( tok.nextToken() );
            int B = Integer.parseInt( tok.nextToken() );

            String res = String.format( "Case #%d: ", i+1 );
            out.write( res );
            out.write( Integer.toString(solve( A, B ) ));
            out.newLine();
        }

        out.close();


    }
}
