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 com.gcj;

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Set;
import java.util.TreeSet;

public class HallOfMirrors {

	public static Integer mirrors(String A, String B) {
		int lowerB = Integer.parseInt(A);
		int upperB = Integer.parseInt(B);
		int mirror = 0;
		int mirrorAdvised = 0;
		Map<Integer,List<Integer>> uniq = new HashMap<Integer,List<Integer>>();
		for (int i = lowerB; i <= upperB; i++) {
			String num = Integer.toString(i);
			// System.out.println(num + " " + num.length());
			for (int j = 1; j <= num.length(); j++) {
				String numA = num.substring(j, num.length())
						+ num.substring(0, j);
//				String numB = new StringBuffer(numA).reverse().toString();
				// mirror += (lowerB <= Integer.parseInt(numA) &&
				// Integer.parseInt(numB)<= upperB ) ? 1 : 0;
//				mirror += (lowerB <= Integer.parseInt(numA) && Integer.parseInt(numA)< Integer.parseInt(numB) 
//						&& Integer.parseInt(numB) <= upperB) ? 1 : 0;

				if(lowerB <= Integer.parseInt(num) && Integer.parseInt(num) < Integer.parseInt(numA) && Integer.parseInt(numA) <= upperB)
				{
//					System.out.println(numA + " " + num);
					if(uniq.containsKey(Integer.parseInt(num)))
							{
								List<Integer> some  = uniq.get(Integer.parseInt(num));
								if(some.contains(Integer.parseInt(numA)))
								{
//									System.out.println("GOTnum=" + num);
//									System.out.println("GOT YOU" + numA);
									mirrorAdvised--;
								}
								some.add(Integer.parseInt(numA));
								mirrorAdvised++;
							}
					else
					{
						List<Integer> x = new ArrayList<Integer>();
						x.add(Integer.parseInt(numA));
						uniq.put(Integer.parseInt(num), x);
						mirrorAdvised++;
					}
					mirror++;

				}
			}
		}
//		Set xa = new TreeSet();
//		for(Map.Entry<Integer, List<Integer>> a : uniq.entrySet())
//		{
//			if(a.getValue().size()>0)
//			{
////				System.out.println(a.getKey()-a.getValue().get(0));
//				xa.add(a.getKey());
//				System.out.println(a.getKey() + " " + a.getValue());
//			}
//		}
//		System.out.println(xa.size());
		return mirrorAdvised;
	}

	public static void readFile() {

		try {
			BufferedReader in = new BufferedReader(new FileReader(
					"C://dev//gcj//C-small-attempt0.in"));
			String str;
			boolean first = true;
			int num = 0;
			int k = 0;
			List<String> testCases = new ArrayList<String>();
			while ((str = in.readLine()) != null) {
				if (first) {
					num = Integer.parseInt(str);
					first = false;
				} else {
					String[] input = str.split(" ");
					String A = input[0];
					String B = input[1];

					Integer result = mirrors(A, B);

					System.out.println("Case #" + (++k) + ": " + result);
				}

			}
			in.close();
		} catch (IOException e) {
		}

	}

	public static void main(String args[]) {
		readFile();
	}

}
