package qual;

import java.util.Scanner;

public class RecycledNumbers {

	public static void main(String[] args) {
		new RecycledNumbers().run();

	}

	private void run() {
		Scanner sc = new Scanner(System.in);
		int T = sc.nextInt();
		for (int t = 0; t < T; t++) {
			int A = sc.nextInt();
			int B = sc.nextInt();
			int result = solve(A, B);
			System.out.printf("Case #%d: %d\n", t + 1, result);
		}
	}

	public int solve(int A, int B) {
		int result = 0;
		for (int i = A; i <= B; i++) {
			int dig = (int) Math.log10(A/*same as B*/) + 1;
			int aa = i;
			for (int d = 0; d < dig - 1; d++) {
				aa = (aa % 10) * (int)Math.pow(10, dig - 1) + (aa / 10);
				if (i == aa) {
					break;
				}
				if (i < aa && aa <= B) {
//					System.out.printf("(%d, %d) ", i, aa);
					result++;
				}
			}
		}
		return result;
	}

}

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;


public class recycle {
	static int A=1111;
	static int B=2222;
	static int counter=0;
	static int cases=0;
	public static void main(String args[]) throws NumberFormatException, IOException{
		String temp,temp1[];
		FileReader in=new FileReader(new File("in"));
		BufferedReader br=new BufferedReader(in);
		FileOutputStream out=new FileOutputStream("out"); 
		cases=Integer.parseInt(br.readLine());
		for(int k=0;k<cases;k++){
			counter=0;
			temp=br.readLine();
			temp1=temp.split(" ");
			A=Integer.parseInt(temp1[0]);
			B=Integer.parseInt(temp1[1]);
		for(int i=A;i<B;i++)
			for(int j=i+1;j<=B;j++)
			{
				if(isRecycled(i,j))
					counter++;
			}
			out.write(("Case #"+(k+1)+": "+counter+"\n").getBytes());
		}
		System.out.println("\nans"+counter);
	}
	static boolean isRecycled(int n,int m){
		String ns=new Integer(n).toString();
		String ms=new Integer(m).toString();
		String temp;
		if(ns.length()==ms.length()){
		
			for(int i=0;i<ns.length();i++){
				temp=ns.substring(i)+ns.substring(0,i);
				if(temp.equals(ms))
					return true;
			}
		}
		return false;
	}
}
