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.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.io.InputStreamReader;


public class RecycledPairs {
	public static void main(String []args) throws NumberFormatException, IOException{
		BufferedReader in = new BufferedReader(new FileReader("input.in"));
		String hm="", line[];
		int n =Integer.valueOf(in.readLine()), m=1, a, b, c;
		for(m=1;m<=n;m++){
			System.out.print(m+" ");
			line=in.readLine().split(" ");
			a=Integer.valueOf(line[0]); b=Integer.valueOf(line[1]);
			c=0;
			for(int i=a;i<b;i++){
				for(int j=i+1;j<=b;j++){
					//System.out.println("ANA: "+i+" "+j);
					if(recycled(String.valueOf(i),String.valueOf(j))) c++;
				}
			}
			hm+="Case #"+m+": "+c+"\n";
		}
		System.out.println();
		System.out.println(hm);
	}

	private static boolean recycled(String n, String m) {
		String aux=""; int li=0;
		int leng=n.length();
		//System.out.println("Length: "+leng);
		if(leng==1) return false;
		for(int i=leng-1;i>0;i--){
			aux=String.valueOf(n.charAt(leng-1));
			aux+=n.substring(0, leng-1);
			n=aux;
			//System.out.println(aux+" "+m);
			if(n.equals(m))
				return true;
		}
		return false;
	}
}
