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.File;
import java.io.IOException;
import java.io.PrintStream;
import java.util.HashSet;
import java.util.Scanner;

public class Recycled {

	public static void main(String[] args) throws IOException{
		Scanner sc = new Scanner(new File("recycled.in"));
		System.setOut(new PrintStream(new File("recycled.out")));
		int T = sc.nextInt();
		HashSet<String> p;
		int A,B;
		String sA,sB,sN;
		for(int set=1; set<=T; set++){
			A = sc.nextInt();
			B = Integer.parseInt(sB = sc.next());
			char max = sB.charAt(0);
			p = new HashSet<String>((B-A)*4,.99f);
			for(int n=A; n<B+1; n++){
				sN = n+"";
				int size = sN.length();
				for(int j = 1; j<size; j++){
					if(sN.charAt(j)>max)
						continue;
					String sM = sN.substring(j)+sN.substring(0,j);
					int m = Integer.parseInt(sM);
					if(A-m<1 && m-B<1 && n!=m){
						int small, large;
						if(n<m){
							small = n; large = m;
						}
						else{
							small = m; large = n;
						}
						p.add(small+" "+large);
					}
						
				}
			}
			System.out.println("Case #"+set+": "+p.size());
		}
	}

}