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


public class RecycledNumbers {

	
	public static void main(String[] args) throws FileNotFoundException {

		// ////////////////////////////////////
		// Begin Code Jam regular code //
		// ////////////////////////////////////

		Scanner inFile = new Scanner(new File("C-large.in"));
		PrintStream outFile = new PrintStream(new File("C-large-out.txt"));

		int numCases = inFile.nextInt();
		inFile.nextLine(); // Gets rid of newline char

		// ////////////////////////////////////
		// End Code Jam regular code //
		// ////////////////////////////////////

		for (int i = 1; i <= numCases; i++) {
			int A = inFile.nextInt();
			int B = inFile.nextInt();
			
			int recycleCount = 0;
			for(int n = A; n < B; n++) {
				HashSet<Integer> recycled = new HashSet<Integer>();
				for(int j=1; j<numDigits(n); j++) {
					int shifted = shiftNumPlaces(n,j);
					if(shifted <= B && shifted > n && numDigits(shifted) == numDigits(n) && !recycled.contains(Integer.valueOf(shifted))) {
						recycleCount++;
						recycled.add(Integer.valueOf(shifted));
						//System.out.println("recycled (" + n + "," + shifted + ")");
					} else {
						//System.out.println("skipped (" + n + "," + shifted + ")");
					}
				}
			}
			printCase(outFile, i, recycleCount);
		}
	}
	
	
	private static void printCase(PrintStream outStream, int i, int n) {
		outStream.println("Case #" + i +": " + n);
	}
	
	
	private static int numDigits(int n) {
		int count = 0;
		while(n != 0) {
			n = n / 10;
			count++;
		}
		return count;
	}
	
	
	private static int shiftNumPlaces(int n, int shiftAmount) {
		//String numStr = Integer.toString(n);
		String savedDigits = "";
		for(int i=0; i<shiftAmount; i++) {
			savedDigits = (n%10) + savedDigits;
			n = n / 10;
		}
		String shifted = savedDigits + n;
		return Integer.parseInt(shifted);
	}

}
