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 static java.lang.Integer.parseInt;
import static java.lang.Long.parseLong;
import static java.lang.Math.max;
import static java.lang.Math.min;
import static java.util.Arrays.fill;

import java.io.*;
import java.math.BigInteger;
import java.util.HashSet;
import java.util.Set;
import java.util.StringTokenizer;

public class C {
	
	static BufferedReader in;
	static PrintWriter out;
	static StringTokenizer tok;
	
	static void solveTest() throws Exception {
		int A = nextInt();
		int B = nextInt();
		int digit = Integer.toString(A).length();
		
		int res = 0;
		for(int n = A;n<=B;n++){
 			Set<Integer> set = new HashSet<Integer>();
			for(int i = 1;i< digit;i++){
				int nshift = shift(n,i);
				if(nshift > n && nshift <= B)
				{
					set.add(nshift);
				}
			}
			res += set.size();
		}
		out.printf("%d\n", res);
	}
	
	static int shift(int N, int idx)
	{
		String bef = Integer.toString(N);
		int n = bef.length();
		String aft = bef.substring(idx,n) + bef.substring(0,idx);
		return Integer.parseInt(aft);
	}
	static void solve() throws Exception {
		int tests = nextInt();
		for (int test = 1; test <= tests; test++) {
			out.print("Case #" + test + ": ");
			solveTest();
		}
	}

	public static void main(String[] args) throws Exception {
		in = new BufferedReader(new InputStreamReader(System.in));
		out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));
		solve();
		in.close();
		out.close();
	}
	
	static String next() throws IOException {
		while (tok == null || !tok.hasMoreTokens()) {
			tok = new StringTokenizer(in.readLine()," \r\n\t\f");
		}
		return tok.nextToken();
	}
	
	static char nextChar() throws IOException {
		String token = next();
		if (token.length() != 1) {
			throw new IllegalArgumentException("String \"" + token + "\" is not a single character");
		}
		return token.charAt(0);
	}
	
	static int nextInt() throws IOException {
		return parseInt(next());
	}
	
	static long nextLong() throws IOException {
		return parseLong(next());
	}
	
	static BigInteger nextBigInt() throws IOException {
		return new BigInteger(next());
	}
}