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.util.*;
public class GoogleC {

	public static void main(String[] args) throws FileNotFoundException{
		Scanner scan = new Scanner(new File("B-small.txt"));
		//finit2();
		int n = scan.nextInt();
		for (int i = 0; i < n; i++){
			ht.clear();
			System.out.println("Case #" + (i+1) + ": " + sum(scan.nextInt(), scan.nextInt()));
		}
	}

	public static long sum(int a, int b){
		ht = new HashSet<Pair>();
		long ret = 0;
		for (int i = a; i <= b; i++){
			ret += run(i, a, b);

		}
		return ret;
	}

	public static HashSet<Pair> ht = new HashSet<Pair>();

	private static class Pair{
		int m, n;
		public Pair(int m, int n){
			this.m = m;
			this.n =n;
		}
		public int hashCode(){
			return 31*m+n;
		}

		@Override
		public boolean equals(Object o){
			Pair p = (Pair)o;
			return p.m == m && p.n == n;
		}
	}

	public static int run(Integer n, int a, int b){

		int count = 0;
		String orig = n.toString();
		String cur = n.toString();
		
		for (int i = 0; i < orig.length()-1; i++){
			char c = cur.charAt(0);

			cur = cur.substring(1) + c;
			if (cur.charAt(0) == '0') continue;
			int k = Integer.parseInt(cur);

			if (a <= k && k < n){
				
				if (cur.length()%2==0 && cur.substring(0, cur.length()/2).equals(cur.substring(cur.length()/2, cur.length()))){
					Pair p = new Pair(k, n);
					if (!ht.contains(p)){
						count++;
						//System.out.println(k + " " + n);
						ht.add(p);
					}
					/*else{
						System.out.println(k + " " + n);
					}*/
				}
				else{
					count++;
				}
				
			}
			
		}
		return count;

	}


}
