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

public class C {

    void solve() throws IOException {
        in("C-large.in"); out("C-large.out");

        long tm = System.currentTimeMillis();
        boolean[] mask = new boolean[2000000];
        int[] r = new int[10];
        int t = readInt();
        for (int cs = 1; cs <= t; ++cs) {
            int a = readInt();
            int b = readInt();
            int ans = 0;
            for (int m = a + 1; m <= b; ++m) {
                char[] d = String.valueOf(m).toCharArray();
                int c = 0;
                for (int i = 1; i < d.length; ++i) {
                    if (d[i] != '0' && d[i] <= d[0]) {
                        int n = 0;
                        for (int j = 0; j < d.length; ++j) {
                            int jj = i + j;
                            if (jj >= d.length) jj -= d.length;
                            n = n * 10 + (d[jj] - '0');
                        }
                        if (n >= a && n < m && !mask[n]) {
                            ++ans;
                            mask[n] = true;
                            r[c++] = n;
                        }
                    }
                }
                for (int i = 0; i < c; ++i) {
                    mask[r[i]] = false;
                }
            }
            println("Case #" + cs + ": " + ans);
            //System.out.println(cs);
        }
        System.out.println("time: " + (System.currentTimeMillis() - tm));
        exit();
    }

    void in(String name) throws IOException {
        if (name.equals("__std")) {
            in = new BufferedReader(new InputStreamReader(System.in));
        } else {
            in = new BufferedReader(new FileReader(name));
        }
    }

    void out(String name) throws IOException {
        if (name.equals("__std")) {
            out = new PrintWriter(System.out);
        } else {
            out = new PrintWriter(name);
        }
    }

    void exit() {
        out.close();
        System.exit(0);
    }

    int readInt() throws IOException {
        return Integer.parseInt(readToken());
    }

    long readLong() throws IOException {
        return Long.parseLong(readToken());
    }

    double readDouble() throws IOException {
        return Double.parseDouble(readToken());
    }

    String readLine() throws IOException {
        st = null;
        return in.readLine();
    }

    String readToken() throws IOException {
        while (st == null || !st.hasMoreTokens()) {
            st = new StringTokenizer(in.readLine());
        }
        return st.nextToken();
    }

    boolean eof() throws IOException {
        return !in.ready();
    }

    void print(String format, Object ... args) {
        out.println(new Formatter(Locale.US).format(format, args));
    }

    void println(String format, Object ... args) {
        out.println(new Formatter(Locale.US).format(format, args));
    }

    void print(Object value) {
        out.print(value);
    }

    void println(Object value) {
        out.println(value);
    }

    void println() {
        out.println();
    }

    StringTokenizer st;

    BufferedReader in;
    PrintWriter out;

    public static void main(String[] args) throws IOException {
        new C().solve();
    }
}

import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import java.io.PrintWriter;


public class QuestionC {

	public static void doPuzzle() {
		try {
			
			File questionfile = new File("C.in");
			BufferedReader questionreader = new BufferedReader(new FileReader(questionfile));
	
			File answerfile = new File("C.out");
			PrintWriter answerwriter = new PrintWriter(new BufferedWriter(new FileWriter(answerfile)));

			String[] params = null;
			String question = questionreader.readLine();
			int T = Integer.parseInt(question);
			int[] A = new int[T];
			int[] B = new int[T];
			
			for (int i = 0; i < T; i++) {
				question = questionreader.readLine();
				params = question.split(" ");
				A[i] = Integer.parseInt(params[0]);
				B[i] = Integer.parseInt(params[1]);
			}

			int[] answer = analyze(T, A, B);
			
			for (int i = 0; i < T; i++) {
				answerwriter.println("Case #" + (i+1) + ": " + answer[i]);
			}

			answerwriter.close();
			questionreader.close();
			
		} catch (FileNotFoundException e) {
			e.printStackTrace();
			return;
		} catch (IOException e) {
			e.printStackTrace();
			return;
		}
	}
	
	private static int[] analyze(int T, int[] A, int[] B) {
		
		int[][] blockA = new int[9][T];
		int[][] blockB = new int[9][T];
		int[][] blockT = new int[9][T];
		int[][] blockX = new int[9][T];
		int[] blockLen = new int[9];
		
		for (int i = 0; i < T; i++) {
			int len = String.valueOf(A[i]).length();
			blockA[len][blockLen[len]] = A[i];
			blockB[len][blockLen[len]] = B[i];
			blockT[len][blockLen[len]] = i;
			blockLen[len]++;
		}
		
		for (int i = 1; i <= 20000000; i++) {
			String str = String.valueOf(i);
			int len = str.length();
			StringBuilder sb = new StringBuilder(str);
			for (int j = 1; j < len; j++) {
				sb = sb.append(sb.charAt(0)).deleteCharAt(0);
				int value = Integer.parseInt(sb.toString());
				if (i == value) break;
				for (int k = 0; k < blockLen[len]; k++) {
					if (blockA[len][k] > i) continue;
					if (blockA[len][k] > value) continue;
					if (blockB[len][k] < i) continue;
					if (blockB[len][k] < value) continue;
					blockX[len][k]++;
				}
			}
		}

		int[] answer = new int[T];

		for (int i = 0; i < 9; i++) {
			for (int j = 0; j < blockLen[i]; j++) {
				answer[blockT[i][j]] = blockX[i][j] / 2;
			}
		}
		
		return answer;
	}
}

