import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.HashSet;

public class Recycled {
    public static void main(String[] args) {
        try {
            BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
            int t = Integer.parseInt(br.readLine());
            for (int i = 0; i < t; i++) {
                String[] str = br.readLine().split(" ");
                int a = Integer.parseInt(str[0]);
                int b = Integer.parseInt(str[1]);
                System.out.println("Case #" + (i + 1) + ": " + find(a, b));
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
    }

    private static int find(int a, int b) {
        HashSet<Long> used = new HashSet<Long>();
        int digits = String.valueOf(a).length();
        if (digits == 1) return 0;
        for (int i = a; i <= b; i++) {
            int s = 10;
            int m = (int) Math.pow(10, digits-1);
            for (int j = 0; j < digits-1; j++) {
                int r = i % s;
                if (r < s/10) continue;
                int q = i / s;
                int rn = r * m + q;
                s *= 10; m /= 10;
                if (i != rn && rn >= a && rn <= b) {
                    long pp;
                    if (rn < i) pp = (long)rn << 30 | i;
                    else pp = (long)i << 30 | rn;
                    if (!used.contains(pp)) {
                        used.add(pp);
                    }
                }
            }
        }
        return used.size();
    }
}

/**
 * 
 */
package GoogleCodeJam2012;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;

/**
 * @author MArunkumar
 *
 */
public class RecycledNumbers {

	/**
	 * @param args
	 * @throws IOException 
	 */
	public static void main(String[] args) throws IOException {
		BufferedReader br = new BufferedReader(new FileReader("RecycledNumbersInput.txt"));
		FileWriter fw = new FileWriter("RecycledNumbersOutput.txt");
		int T = Integer.parseInt(br.readLine());
		for(int i=1; i<=T; i++){
			String datas[] = br.readLine().split(" ");
			int A = Integer.parseInt(datas[0]);
			int B = Integer.parseInt(datas[1]);
			int result = 0;
			for(int n=A; n<B; n++){
				int r = n;
				String nStr = String.valueOf(n);
				String rStr = String.valueOf(r);
				if(!(rStr.length()<2)){
					do{
						rStr = shiftLeft(rStr);
						r = Integer.parseInt(rStr);
						String trStr = String.valueOf(r);
						if(trStr.length() == nStr.length() && r>n && r<=B){
							result++;
						}
					}while(r!=n);
				}
			}
			fw.write("Case #"+i+": "+result+"\n");
		}
		fw.close();
	}
	
	private static String shiftLeft(String rStr){
		char[] rChars = rStr.toCharArray();
		char temp = rChars[0];
		for(int i=0; i<rChars.length-1; i++){
			rChars[i] = rChars[i+1];
		}
		rChars[rChars.length-1] = temp;
		return new String(rChars);
	}

}
