package codejam;

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

public class RecycledNumbers {
	public static void main(String[] args) throws IOException {
		BufferedReader in = new BufferedReader(new FileReader("in.txt"));
		PrintWriter out = new PrintWriter(new File("out.txt"));
		
		int T = Integer.parseInt(in.readLine());
		for (int t = 1; t <= T; ++t) {
			String[] parts = in.readLine().split("[ ]+");
			int A = Integer.parseInt(parts[0]);
			int B = Integer.parseInt(parts[1]);
			
			int cnt = 0;
			for (int i = A; i < B; ++i) {
				String str = String.valueOf(i);
				int n = str.length();
				String res = "";
				Set<Integer> seen = new HashSet<Integer>();
				for (int j = n - 1; j > 0; --j) {
					res = str.substring(j) + str.substring(0, j);
					int k = Integer.parseInt(res);
					if (k > i && k <= B) {
						//System.out.println("(" + i + ", " + k + ")");
						if (!seen.contains(k)) {
							++cnt;
							seen.add(k);
						}
					}
				}
			}

			out.println("Case #" + t + ": " + cnt);
		}
		
		in.close();
		out.close();
		System.exit(0);
	}
}

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

public class ProblemC {
    public static void main(String[]args) {
	Scanner f = new Scanner(System.in);
	int T = f.nextInt();
	
	for(int set=0;set<T;set++) {
	    int A = f.nextInt();
	    int B = f.nextInt();
	    
	    int b = B;
	    int leadingMult = 1;
	    while(b >= 10) {
		b /= 10;
		leadingMult*=10;
	    }
	    
	    // System.out.println("leadingMult: "+leadingMult);
	    
	    long pairs = 0;
	    for(int x=A;x<=B;x++) {
		// System.out.println("x: "+x);
		int y = x;
		do {
		    y = y/10 + leadingMult*(y%10);
		    // System.out.println("y: "+y);
		    if(x < y && y <= B) {
			//			System.out.printf("(%d,%d)\n",x,y);
			pairs++;
		    }
		} while(y!=x);
	    }
	    
	    System.out.printf("Case #%d: %d\n",set+1,pairs);
	}
    }
}