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));
			
		}
		
		
		

	}
	
	
}

public class Case {
	
	//Atrib
	public int ind;
	public double a;
	public double b;

	public String resolver() {
		StringBuilder s_out = new StringBuilder("Case #" + ind + ": ");
		
		int cont = 0;
		
		for(int n = (int) a;n<b+1;n++)
			for(int m = n+1;m<=b;m++){
				
				String nn = String.valueOf(n);
				String mm = String.valueOf(m);
//				nn = nn.replace("0", "");
//				mm = mm.replace("0", "");
				if(nn.length() == mm.length() 
						&& Double.parseDouble(nn) < Double.parseDouble(mm)){
					
//					System.out.println("---" + nn + " " + mm);
					
					for(int i=1;i<nn.length();i++){
						
						String aux = nn.substring(i, nn.length()) + nn.substring(0, i);
						if(aux.equals(mm)){
//							System.out.println("---" + nn + " " + mm);
//							System.out.println( aux);
							cont++;
							i = nn.length();
						}
					}
					
				}
			}
		
//		System.out.println(cont);
		s_out.append(cont);
		
		s_out.append("\n");
		return s_out.toString();
	}

}//endClass
