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();
    }
}


package googleCodeJam;

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

public class firstExercise {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		try{
			FileInputStream fstream = new FileInputStream("C-large.in");
			DataInputStream in = new DataInputStream(fstream);
			BufferedReader br = new BufferedReader(new InputStreamReader(in));
			
			FileWriter fstream2 = new FileWriter("out.txt");
			BufferedWriter out = new BufferedWriter(fstream2);
			
			String strLine;
			int j=0;
		
			strLine = br.readLine();
			
			while ((strLine = br.readLine()) != null)   {
				ArrayList<String> line = new ArrayList<String>();
				String[] s = strLine.split(" ");
				int i =0;
				for(;i<s.length;){
					line.add(s[i++]);
				}  
				
				int n1 = Integer.parseInt(line.get(0));
				int n2 = Integer.parseInt(line.get(1));
				int nr = 0;
				
				for(int k = n1; k<=n2; k++)
				{ 
					int temp1=k,temp2,nr_temp=0;
					int nr_sh = (int)Math.log10(k);
					do{
						if((temp1>=n1) && (temp1<=n2)) 
							nr_temp++;
						temp2=temp1%10;
						temp1/=10;
						temp1+=temp2*Math.pow(10,nr_sh);
					}while(temp1!=k);
					if(nr_temp>1) 
						nr=nr+nr_temp-1;
				}
				
				
					
					
				//shkrimi i rezultatit	
					
				out.write("Case #"+(++j)+": "+nr/2+" \n");
				
				
				//System.out.println(strLine);
								
				
			}
			//System.out.println(vec.size()+vec.toString());
		    in.close();
		    out.close();
		}
		catch (Exception e){//Catch exception if any
			System.err.println("Error: " + e.getMessage());
		}
	}	
}
