import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.StringTokenizer;

class RecycledNumbers{
	
	
	
	int getcount(int small,int large){
		int count = 0;
		for(int currnum = small; currnum < large; currnum++){
			int permut = currnum;
			int no_of_digits = 0;
			while(permut > 0){
				permut = permut/10;
				no_of_digits++;
			}
			int lastDigit = currnum % 10;
			permut = currnum / 10;
			permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
			while(permut != currnum){
				
				if(permut >= currnum && permut <= large){
					
					count++;
				}
				lastDigit = permut % 10;
				permut = permut / 10;
				permut = permut + lastDigit * (int)Math.pow(10, no_of_digits-1);
				
			}
			
		}
		
		return count;
	}
	
	public static void main(String args[]){
		RecycledNumbers d = new RecycledNumbers();
		
		int no_of_cases = 0;
		String input = "";
		
		BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
		try{
			no_of_cases = Integer.parseInt(br.readLine());
		}
		catch(Exception e){
			System.out.println("First line is not a number");
		}
		
		for(int i=1; i <= no_of_cases;i++){
			try{
				input = br.readLine();
			}
			catch(Exception e){
				System.out.println("Number of test cases different from the number mentioned in first line");
			}
			
			System.out.print("Case #" +i+": ");
			
			StringTokenizer t =  new StringTokenizer(input);
			int small=0,large=0;
			if(t.hasMoreTokens()){
				small = Integer.parseInt(t.nextToken());
			}
			if(t.hasMoreTokens()){
				large = Integer.parseInt(t.nextToken());
			}
			System.out.println(d.getcount(small,large));
			
		}
		
		
		

	}
	
	
}
import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.util.StringTokenizer;

/**
 * @author MASTERMIND
 *
 */
public class Prog {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		// TODO Auto-generated method stub

		FileReader fr;
		try 
		{
			fr = new FileReader("C-small-attempt0.in");
			FileWriter f1 = new FileWriter("C-small.out");
			
			BufferedReader br = new BufferedReader(fr);
			
			int i=1;
			String s;
			StringBuffer strbuf = new StringBuffer();
			
			br.readLine();
			while((s = br.readLine())!=null)
			{
				
				int count = 0; 
				strbuf.delete(0, strbuf.length());
				StringTokenizer st = new StringTokenizer(s," ");
				int no1 = Integer.parseInt(st.nextToken());
				System.out.print(no1+"\t");
				int no2 = Integer.parseInt(st.nextToken());
				System.out.println(no2);
				int current = no1;
				while(current < no2)
				{
					String s1 = String.valueOf(current);
																		
					for(int next=current+1 ; next<=no2 ; next++)
					{
						//System.out.println(current+"   "+next);
						String s2 = String.valueOf(next);
						for(int j=1;j<s2.length();j++)
						{
							String p1 = s2.substring(s2.length()-j, s2.length());
							String p2 = s2.substring(0, s2.length()-j);
							String cat = p1+p2;
							//System.out.println(p1+"   "+p2+"   "+cat+"   "+s1);
							if(cat.equals(s1))
								count++;
						}
					}
					
				current++;
				}
				
				strbuf.insert(0, "Case #"+i+": "+count+"\n");
				i++;
			
				char[] buffer = new char[strbuf.length()];
				s = strbuf.toString();
				System.out.println(s);
				s.getChars(0, s.length(), buffer, 0);
				
				f1.write(buffer);
			}
			f1.close();
			fr.close();
			
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

}
