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));
			
		}
		
		
		

	}
	
	
}
package mgg.utils;

public class Triplet {

	public int first;
	public int second;
	public int third;

	public Triplet(int first, int second, int third){
		this.first = Math.max(Math.max(first, second), third);
		if (first == this.first){
			this.second = Math.max(second, third);
			this.third = Math.min(second, third);
		}
		else if (second == this.first){
			this.second = Math.max(first, third);
			this.third = Math.min(first, third);
		}
		else{
			this.second = Math.max(first, second);
			this.third = Math.min(first, second);
		}
	}

	@Override
	public String toString() {
		return "(" + first + ", " + second + ", " + third + ") " + (isSurprising()?"(*)":"");
	}

	@Override
	public int hashCode() {
		final int prime = 31;
		int result = 1;
		result = prime * result + first;
		result = prime * result + second;
		result = prime * result + third;
		return result;
	}

	@Override
	public boolean equals(Object obj) {
		if (this == obj)
			return true;
		if (obj == null)
			return false;
		if (getClass() != obj.getClass())
			return false;
		Triplet other = (Triplet) obj;
		if (first != other.first)
			return false;
		if (second != other.second)
			return false;
		if (third != other.third)
			return false;
		return true;
	}

	public int sum() {
		return first + second + third;
	}

	public boolean isSurprising() {
		return ((Math.abs(first-second) == 2) ||
				(Math.abs(first-third) == 2) ||
				(Math.abs(second-third) == 2));
	}

}
