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.*;
public class ProblemC {
    public static void main(String args[]) {
        try {
            BufferedReader br = new BufferedReader(new FileReader("E:\\test.txt"));
            int no;
            no= Integer.parseInt(br.readLine());
            int casen=0,i,j;
            int a,b,count;
            String temp,t,u;
            String output;
            output="";
            String spl[];
            String memory,fp,lp;
            while( casen < no ) {
                temp = br.readLine();
                output += "Case #"+(casen+1)+": ";
                spl = temp.split(" ");
                a = Integer.parseInt(spl[0]);
                b = Integer.parseInt(spl[1]);
                count = 0;
                memory = "";
                for(i=a;i<=b; i++) {
                	t = i+"";
                	for(j=1;j<t.length();j++) {
                		u= t.substring(j);
                		u+= t.substring(0,j);
                		//System.out.println(u);
                		if( !u.startsWith("0") && Integer.parseInt(u) < i && Integer.parseInt(u)<= b && Integer.parseInt(u) >= a)
                		{
                			if( t.length() % 2 == 0 ) {
                				fp= t.substring(0,t.length()/2);
                				lp = t.substring(t.length()/2);
                				if( fp.equals(lp) ) {
                					if(!memory.contains(Integer.parseInt(u)+" "+i)) {
                						count++;
                						memory += Integer.parseInt(u) + " " + i+"\n";
                					}
                				}
                				else {
                					count++;
                				}
                			}
                			else {
                				count++;
                			}
                			/*if( memory.contains(Integer.parseInt(u)+" "+i) )
                				System.out.println(Integer.parseInt(u)+"  "+i);
                			else
                			{
                				count++;
                				memory += Integer.parseInt(u) + " " + i+"\n";
                			}*/
                		}
                	}
                }
                output += count;
                if( casen != no-1 )
                    output += "\n";
                casen++;
            }
            BufferedWriter bw = new BufferedWriter( new FileWriter("E:\\result.txt"));
            bw.write(output);
            bw.close();
            br.close();
        }
        catch( Exception e )
        {
            e.printStackTrace();
        }
    }
}