import java.util.HashMap;
import java.util.HashSet;
import java.util.Scanner;

public class Recycle {

	private static HashMap<Integer, HashSet<Integer>> map = new HashMap<Integer, HashSet<Integer>>();
	private static HashSet<Integer> toSkip = new HashSet<Integer>();
	/**
	 * @param args
	 */
	public static void main(String[] args) {
		Scanner reader = new Scanner(System.in);
		int T = reader.nextInt();
		for (int tc = 1; tc <= T; tc++) {
			int a = reader.nextInt();
			int b = reader.nextInt();
			long before = System.currentTimeMillis();
			int res = doit(a, b);
			System.out.printf("Case #%d: %d\n", tc, res);
			long after = System.currentTimeMillis();
//			System.out.println("time taken: " + (after - before));
		}
	}

	private static int doit(int a, int b) {
		int count = 0;
		HashSet<Integer> skip = new HashSet<Integer>(toSkip);
		for (int i = a; i <= b; i++) {
			if (skip.contains(i))
				continue;
			HashSet<Integer> arr = generate(i);
//			if(arr.size() > 1) {
//				map.put(i, arr);
//			}
			// System.out.println(i + " --> " +
			// Arrays.deepToString(arr.toArray()));
			int temp = 0;
			if (arr.size() > 1) {
				for (int x : arr) {
					if (x >= a && x <= b) {
						temp++;
						skip.add(x);
					}
				}
				count += temp * (temp - 1) / 2;
			}
//			System.out.println("not skipping " + i + " gen: " + arr.size()+ " " + (temp * (temp - 1) / 2));
		}
		return count;
	}

	private static HashSet<Integer> generate(int num) {
		if(map.containsKey(num)) {
			HashSet<Integer> list = map.get(num);
			return list;
		}
		HashSet<Integer> list = new HashSet<Integer>();
		String s = "" + num;
		list.add(num);
		int len = s.length();
		for (int i = 1; i < len; i++) {
			String temp = s.substring(i) + s.substring(0, i);
			// System.out.println("temp: " + temp);
			if (temp.charAt(0) == '0')
				continue;
			int x = Integer.parseInt(temp);
			if( x <= 2000000) {
				list.add(x);
			}
		}
		if(list.size() > 1) {
			map.put(num, list);
		} else {
			toSkip.add(num);
		}
		return list;
	}

}


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

public class RecycledNumbers {
	
	static class InputReader {
		BufferedReader bin;
		StringTokenizer tokenizer;
		
		public InputReader(InputStream in) {
			bin = new BufferedReader(new InputStreamReader(in));
			tokenizer = null;
		}
		
		public InputReader(String fname) {
			try {
				bin = new BufferedReader(new FileReader(fname));
				tokenizer = null;
			} catch (Exception e) {
				throw new RuntimeException(e);
			}
		}
		
		public String next() {
			
			while( tokenizer == null || !tokenizer.hasMoreTokens())  {
				try {
					tokenizer = new StringTokenizer(bin.readLine());
				} catch(IOException e) {
					throw new RuntimeException(e);
				}
			}
			return tokenizer.nextToken();
		}
		
		public String readLine() {
			try {
				return bin.readLine();
			} catch (IOException e) {
				throw new RuntimeException(e);
			}
		}
		
		public int nextInt() {
			return Integer.parseInt(next());
		}
		
		public long nextLong() {
			return Long.parseLong(next());
		}
		
		public double nextDouble() {
			return Double.parseDouble(next());
		}
		
		public float nextFloat() {
			return Float.parseFloat(next());
		}
		
		public void close() {
			try {
				bin.close();
				tokenizer = null;
			} catch ( IOException e) {
				throw new RuntimeException(e);
			}
		}
	}

	public static void main(String[] args) throws IOException {
		//InputReader in = new InputReader(System.in);
		InputReader in = new InputReader("C-small-attempt0.in");
		PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("A-small-rcnum.out")));
		//PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(System.out)));
		int ctr = 0,start,end;
		int numTc = in.nextInt();
		
		for ( int i = 0; i < numTc; i++ ) {
			start = in.nextInt();
			end = in.nextInt();
			ctr = 0;
			for ( int j = start; j <= end; j++ )
				for ( int k = j + 1; k <= end; k++ ) {
					String s = Integer.toString(j);
					s = s + s;
					if(s.contains(Integer.toString(k)))
						ctr++;
				}
			out.println("Case #"+(i+1)+": "+ctr);
		}
		
		out.close();
		in.close();
	}
}

