import java.io.FileInputStream;
import java.util.HashMap;
import java.util.Scanner;
import java.util.TreeSet;

// Recycled Numbers
// https://code.google.com/codejam/contest/1460488/dashboard#s=p2

public class C {

	private static String process(Scanner in) {
		int A = in.nextInt();
		int B = in.nextInt();
		int res = 0;
		int len = Integer.toString(A).length();
		for(int n = A; n < B; n++) {
			String str = Integer.toString(n);
			TreeSet<Integer> set = new TreeSet<Integer>();
			for(int i = 1; i < len; i++) {
				int m = Integer.parseInt(str.substring(i, len) + str.substring(0, i));
				if ( m > n && m <= B && ! set.contains(m) ) {
					set.add(m);
					res++;
				}
			}
		}
		return Integer.toString(res);
	}

	public static void main(String[] args) throws Exception {
		Scanner in = new Scanner(System.in.available() > 0 ? System.in : 
			new FileInputStream(Thread.currentThread().getStackTrace()[1].getClassName() + ".practice.in"));
		int T = in.nextInt();
		for(int i = 1; i <= T; i++) 
			System.out.format("Case #%d: %s\n", i, process(in));
	}
}

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

class CodejamC {
    public static int power[];
    public static void main (String [] args) throws IOException {
        BufferedReader in = new BufferedReader(new FileReader("E:/C-small-attempt0.in"));
        PrintWriter out = new PrintWriter(new BufferedWriter(new FileWriter("E:/outC.txt")));
        int nTest = Integer.parseInt(in.readLine());
        power = new int[10];
        power[0] = 1;
        for (int i = 1; i < power.length; i++) {
            power[i] = power[i-1] * 10;
        }
        for (int testIndex = 0; testIndex < nTest; testIndex++) {
            out.print("Case #" + (testIndex + 1) + ": ");
            /***** start **********/
            StringTokenizer st = new StringTokenizer(in.readLine());
            int a = Integer.parseInt(st.nextToken());
            int b = Integer.parseInt(st.nextToken());
            long result = 0;
            for (int p = a; p <= b; p++) {
                int len = getLen(p);
                int q = p;
                for (int offset = 1; offset < len; offset++) {
                    int t = q * 10;
                    q = t % power[len] + t / power[len];
                    if (q == p) {
                        break;
                    }
                    if (q <= b && q > p) {
                        result++;
                    }
                }
            }
            out.print(result);
            /***** end   **********/
            out.println();
        }
        out.close();
    }
    public static int getLen(long l) {
        for (int i = 1; i < 10; i++) {
            if (l < power[i]) {
                return i;
            }
        }
        return -1;
    }
    public static int itoa(int a, char[] s) {
        int len = 0;
        while (a > 0) {
            s[len] = (char) (a % 10 + '0');
            a /= 10;
            len++;
        }
        return len;
    }
    /*
     * for (int i = lenCurrent - 1; i >= 0; i--) {
                        int shiftIndex = i + offset;
                        if (shiftIndex >= lenCurrent) {
                            shiftIndex -= lenCurrent;
                        }
                        if (lenMax <= lenCurrent && current[shiftIndex] > max[i]) {
                            continue;
                        }
                    }
                    for (int i = lenCurrent - 1; i >= 0; i--) {
                        int shiftIndex = i + offset;
                        if (shiftIndex >= lenCurrent) {
                            shiftIndex -= lenCurrent;
                        }
                        if (lenMax <= lenCurrent && current[shiftIndex] > max[i]) {
                            continue;
                        }
                        if (current[shiftIndex] > current[i]) {
                            ok = true;
                            break;
                        } else if (current[shiftIndex] < current[i]) {
                            break;
                        }
                    }
                    if (ok) {
                        result++;
                    }
                    
                    for (int i = lenCurrent - 1; i >= 0; i--) {
                        int shiftIndex = i + offset;
                        if (shiftIndex >= lenCurrent) {
                            shiftIndex -= lenCurrent;
                        }
                        if (lenMax <= lenCurrent && current[shiftIndex] > max[i]) {
                            continue;
                        }
                    }
                    for (int i = lenCurrent - 1; i >= 0; i--) {
                        int shiftIndex = i + offset;
                        if (shiftIndex >= lenCurrent) {
                            shiftIndex -= lenCurrent;
                        }
                        if (lenMax <= lenCurrent && current[shiftIndex] > max[i]) {
                            continue;
                        }
                        if (current[shiftIndex] > current[i]) {
                            ok = true;
                            break;
                        } else if (current[shiftIndex] < current[i]) {
                            break;
                        }
                    }
                    if (ok) {
                        result++;
                    }
                    */
}