import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}

import java.io.*;
import java.util.*;

public class C {
	
	BufferedReader br;
	PrintWriter out;
	StringTokenizer st;
	boolean eof;
	
	enum InputType {
		SAMPLE, SMALL, LARGE;
	}
	
	static final InputType currentInputType = InputType.SMALL;
	static final int attemptNumber = 0; // for small inputs only
	
	int pow10;
	
	void solve() throws IOException {
		int a = nextInt();
		int b = nextInt();
		
		pow10 = 1;
		int cnt = Integer.toString(a).length();
		for (int i = 0; i < cnt - 1; i++)
			pow10 *= 10;
		
		long ans = 0;
		
		for (int i = a; i <= b; i++) {
			for (int j = (i % 10) * pow10 + (i / 10); j != i; j = (j % 10) * pow10 + j / 10)
				if (a <= j && j <= b && j > i)
					ans++;
		}
		
		out.println(ans);
	}
	
	void inp() throws IOException {
		switch (currentInputType) {
		case SAMPLE:
			br = new BufferedReader(new InputStreamReader(System.in));
			out = new PrintWriter(System.out);
			break;
		case SMALL:
			String fileName = "C-small-attempt" + attemptNumber;
			br = new BufferedReader(new FileReader(fileName + ".in"));
			out = new PrintWriter(fileName + ".out");
			break;
		case LARGE:
			fileName = "C-large";
			br = new BufferedReader(new FileReader(fileName + ".in"));
			out = new PrintWriter(fileName + ".out");
			break;
		}
		int test = nextInt();
		for (int i = 1; i <= test; i++) {
			System.err.println("Running test " + i);
			out.print("Case #" + i + ": ");
			solve();
		}
		out.close();
	}
	
	public static void main(String[] args) throws IOException {
		new C().inp();
	}
	
	String nextToken() {
		while (st == null || !st.hasMoreTokens()) {
			try {
				st = new StringTokenizer(br.readLine());
			} catch (Exception e) {
				eof = true;
				return null;
			}
		}
		return st.nextToken();
	}
	
	String nextString() {
		try {
			return br.readLine();
		} catch (Exception e) {
			eof = true;
			return null;
		}
	}
	
	int nextInt() throws IOException {
		return Integer.parseInt(nextToken());
	}
	
	long nextLong() throws IOException {
		return Long.parseLong(nextToken());
	}
	
	double nextDouble() throws IOException {
		return Double.parseDouble(nextToken());
	}
}
