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();
    }
}

import java.io.BufferedReader;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.IOException;
import java.io.OutputStreamWriter;
import java.util.HashSet;


public class RecycledNumbers {

    /**
     * Google Code Jam 2012: Problem C. Recycled Numbers
     * @author hullarb
     * @param args
     * @throws IOException 
     * @throws NumberFormatException 
     */
    public static void main(String[] args) throws NumberFormatException, IOException {
	BufferedReader input = new BufferedReader(new FileReader(args[0]));
	OutputStreamWriter out = new OutputStreamWriter(new FileOutputStream(args[0].contains("in")?args[0].replace("in", "out"):args[0] + ".out"));
	int testCases = Integer.parseInt(input.readLine());
	for(int i = 0; i < testCases; i++) {
	    String[] parts = input.readLine().split(" ");
	    int A = Integer.parseInt(parts[0]);
	    int B = Integer.parseInt(parts[1]);
	    int pairs = 0;
	    for(int j = A; j <B; j++) {
		pairs += possiblePairs(j,B);
	    }
	    out.write("Case #" + (i + 1) + ": " + pairs + "\n");
	}
	out.close();
	input.close();
    }

    private static int possiblePairs(int j, int b) {
	String digits = "" + j;
	int pairs = 0;
	HashSet<Integer> found = new HashSet<Integer>();
	for(int i = 0; i < digits.length() - 1; i++) {
	    int n = Integer.parseInt(digits.substring(digits.length() - 1 - i)
		    	+ digits.substring(0,digits.length() - 1 - i));
	    if(n > j && n <= b && !found.contains(n)) {
		found.add(n);
		pairs++;
	    }
	}
	return pairs;
    }

}
