import java.util.Scanner;
import java.io.*;
import java.lang.Math;


public class C{
	public static int recycle(String str){
		String[] numbers = str.split(" ");
		int min = Integer.parseInt(numbers[0]);
		int max = Integer.parseInt(numbers[1]);
		int ret = 0;

		for(int i = min; i < max; i++){
			String num = i + "";
			int len = num.length();
			int k = i;
			for(int j = 1; j < len; j++){
				k = (k/10) + (int)java.lang.Math.pow(10.0,(double)(len-1))*(k%10);
				if (k > i && k <= max)
					ret++;
				else if(k == i)
					break;
			}
		}

		return ret;
	}

	public static void main(String[] args){
		Scanner sc = null;
		String next;
		int out;
		try{
			sc = new Scanner(new File("C-large.in"));
			int cases = Integer.parseInt(sc.nextLine());
			int current = 0;
			

			FileWriter fs = new FileWriter("output.txt");
			BufferedWriter buff = new BufferedWriter(fs);
			while(current < cases){
				next = sc.nextLine();
				current++;
				out = recycle(next);
				buff.write("Case #" + current + ": " + out + "\n");
			}
			buff.close();
		}
		catch(Exception ex){}
	}
}
import java.io.IOException;
import java.util.*;

/**
 * Date: 14/4/12
 * Time: 2:02 PM
 */
public class ProblemC {

    public static void main(String[] args) throws IOException {
        long start = System.currentTimeMillis();
        ArrayList<String> al = GoogleFileStream.getInput();
        ArrayList<String> ret = new ArrayList<String>();

        for( String i : al )
            ret.add( solution( i ) );


        long end = System.currentTimeMillis();
        System.out.println( "Time: " + (end - start) + "ms" );
        GoogleFileStream.setOutput(ret);
    }

    private static String solution(String in) {
        ArrayList<String> input = new ArrayList<String>(Arrays.asList(in.split(" ")));
        int A = Integer.valueOf( input.get(0) );
        int B = Integer.valueOf( input.get(1) );

        int count = 0;
        Set<Integer> dupeSet = new HashSet<Integer>();
        for( int i = A; i <= B; i++)
        {
            String is = String.valueOf(i);
            char[] c = is.toCharArray();

            //System.out.print(i);
            //System.out.print(":");
            dupeSet.clear();
            for( int j = 1; j < c.length; j++)
            {
                //rotate:
                char lastChar = c[c.length-1];
                System.arraycopy(c,0,c,1,c.length - 1);
                c[0]=lastChar;

                int num = Integer.valueOf(new String(c));
                if(i < num && num <= B)
                {
                    if( dupeSet.add(num) )
                    {
                        // (n,m) = (i, c)
                        count++;
                        //System.out.print(num);
                        //System.out.print(",");
                    }
                }
            }
            //System.out.println();
        }

        return String.valueOf(count);
    }
}