import java.io.*;

class code1
{
	public static void main(String args[]) throws Exception 
	{
		File ii = new File ("C-small-attempt1.in");
		FileInputStream fis = new FileInputStream(ii);
		BufferedReader  br = new BufferedReader(new InputStreamReader (fis));
		int cases = Integer.parseInt(br.readLine());
		FileOutputStream fout = new FileOutputStream ("output.txt");
		DataOutputStream dout = new DataOutputStream (fout);
		int total=0;
		for(int i=0;i<cases;i++){
		String temp = br.readLine();
		String parts [] = temp.split(" ");
		int lower = Integer.parseInt(parts[0]);
		int upper = Integer.parseInt(parts[1]);
		System.out.println(lower+" "+upper);
		
		for(int j=lower;j<=upper;j++)
		{
			int abc = j;int length=0;
			if(j<10)continue;
			while (abc!=0){abc/=10;length++;}
			abc=j;
			for(int m=0;m<length-1;m++){
				int shift = abc%10;
				abc=abc/10;
				System.out.println("hi "+j);
				abc=abc+shift*power(10,length-1);
				if(abc<=upper&&shift!=0&&abc>j)total++;
				System.out.println(total);
			}
		}
 		dout.writeBytes("Case #"+(i+1)+ ": "+total+"\n");
 		total=0;
		}//for close
		
	}

	private static int power(int i, int j) {
		int no=1;
		for(int a=0;a<j;a++){no=10*no;}
		return no;
	}
}
/**
 * @author ShengMin Zhang
 * @revision 1.0
 * - brute force naive solution to make it work for the small input size
 */
 
import java.io.*;
import java.util.*;

public class Sample {
	boolean isRecycledPair(int n, int m) {
		String sn = Integer.toString(n);
		String sm = Integer.toString(m);
		
		if(sn.length() != sm.length()) return false;
		
		for(int i = 1; i < sn.length(); i++) {
			
			String newString = sn.substring(i) + sn.substring(0, i);
			if(newString.equals(sm)) return true;
		}
		
		return false;
	}

	int solve (int A, int B) {
		int count = 0;
		for(int n = A; n < B; n++) {
			for(int m = n + 1; m <= B; m++) {
				if(isRecycledPair(n, m)) count++;
			}
		}
		
		return count;
	}

	void run(BufferedReader rd) throws Exception {
		int T = Integer.parseInt(rd.readLine());
		PrintWriter writer = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));
		
		for(int i = 1; i <= T; i++) {
			StringTokenizer st = new StringTokenizer(rd.readLine());
			int A = Integer.parseInt(st.nextToken());
			int B = Integer.parseInt(st.nextToken());
			
			writer.printf("Case #%d: %d", i, solve(A, B));
			writer.println();
		}
		
		rd.close();
		writer.close();
	}

	public static void main(String[] args) throws Exception {
		BufferedReader rd = new BufferedReader(new InputStreamReader(System.in));
		new Sample().run(rd);
	}
}
