import java.util.ArrayList;
import java.util.List;
import java.util.Scanner;


public class Main {

//	static int MAX = 10000;
	static int MAX = 2000000;
	static Object[] All = new Object[MAX+1];
	
	static int size( int x ) {
		if(x>999999) return 7;
		if(x>99999)  return 6;
		if(x>9999)   return 5;
		if(x>999)    return 4;
		if(x>99)     return 3;
		if(x>9)      return 2;
		return 1;
	}
	static int[] rotate( int value ) {
		List<Integer> result = new ArrayList<Integer>();
		int[] V = new int[8];
		int s = size(value);
		int x = value;
		
		for(int i=s-1;i>=0;i--) {
			V[i] = x%10;
			x /=10;
		}
		int rot;
		for(int i=1; i<s; i++) {
			if(V[i]!=0){
				rot=0;
				for(int j=0,ii=i;j<s; j++,ii=(ii+1)%s){
					rot=rot*10+V[ii];
				}
				if(rot>value && !result.contains(rot))
					result.add(rot);
			}
		}
		if( result.isEmpty() )
			return null;
		int[] r = new int[result.size()];
		for(int i=0; i<r.length; i++)
			r[i]=result.get(i);
		return r;
	}
	
	static void precalculate() {
		for(int i=1; i<=MAX; i++){
			All[i] = rotate(i);
		}
	}
	static int solve( Scanner in ) {
		int A, B, sol=0;
		
		A = in.nextInt();
		B = in.nextInt();

		for( int i=A; i<=B; i++) {
//			List<Integer> result = rotate(i);
			if( All[i]!=null ) {
				for(int value: (int[])All[i] ) {
					if( value <= B )
						sol++;
				}
			}
		}

		return sol;
	}
	
	public static void main ( String args[] ) {
		int T; 
		Scanner in = new Scanner(System.in);
		T = in.nextInt();
		int cnt=0;
		int sol;
		precalculate();
		for( cnt=1; cnt<=T; cnt++ ) {
			sol = solve( in );
			System.out.printf("Case #%d: %d\n", cnt, sol);
		}

	}
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package recyclednumbers;

import java.io.File;
import java.io.PrintWriter;
import java.util.Scanner;

/**
 *
 * @author administrator
 */
public class RecycledNumbers {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        String input = "c:\\input.in";
        String output = "c:\\output.txt";
        System.out.println("Hello World");
        RecycledNumbers code1 = new RecycledNumbers();
        File in = new File(input);
        File out = new File(output);
        code1.getFileContents(in, out, "UTF-8");
    }

    public void getFileContents(File input, File output, String charSet) {
        String temp = "";
        try {
            Scanner scanner = new Scanner(input, charSet);
            PrintWriter out = new PrintWriter(output);

            int count = 0;
            int test_case = 0;

            while (scanner.hasNext()) {
                int A = 0, B = 0;
                String test = scanner.nextLine();
                if (count == 0) {
                    test_case = Integer.parseInt(test);
                    count++;
                } else {
                    String[] line_data = test.split("\\s");
                    A = Integer.parseInt(line_data[0]);
                    B = Integer.parseInt(line_data[1]);
                    int result = 0;
                    if (A > B) {
                        int t = A;
                        A = B;
                        B = t;
                    }
                    for (int i = A; i < B; i++) {
                        int list[] = getCycledNumbers(i);
                        for (int j = 0; j < list.length; j++) {
                            if (list[j] > i && list[j] <= B) {
                                result++;
                            }
                        }

                    }
                    
                    System.out.println("Case #" + count + ": " + result);
                    if (count == test_case) {
                        out.print("Case #" + count + ": " + result);
                    } else {
                        out.println("Case #" + count + ": " + result);
                    }
                    count++;
                    
                }

                temp = temp + "\n" + test;
            }
            out.close();
            scanner.close();
        } catch (Exception e) {
            System.out.println("File read/write error");

            return;
        }

    }

    private int[] getCycledNumbers(int number) {
        int cycled[];
        int recycled[];
        String num = String.valueOf(number);
        cycled = new int[num.length()];
        for (int i = 0; i < num.length(); i++) {
            int part1 = number / (int) Math.pow(10, i);
            int part2 = number % (int) Math.pow(10, i);
            cycled[i] = part2 * (int) Math.pow(10, num.length() - i) + part1;
        }

        for (int i = 0; i < (num.length() - 1); i++) {
            for (int j = 0; j < (num.length() - (i + 1)); j++) {
                if (cycled[j] > cycled[j + 1]) {
                    int temp = cycled[j];
                    cycled[j] = cycled[j + 1];
                    cycled[j + 1] = temp;
                }
            }
        }

        int save = cycled[0];
        int final_len = num.length();
        for (int i = 1; i < (num.length()); i++) {
            if (cycled[i] == save) {
                final_len--;
            }
            save = cycled[i];
        }

        if (final_len == num.length()) {
            return cycled;
        }


        recycled = new int[final_len];
        save = recycled[0] = cycled[0];
        int ctr = 0;
        for (int i = 1; i < (num.length()); i++) {
            if (cycled[i] != save) {
                ctr++;
                recycled[ctr] = cycled[i];
            }
            save = cycled[i];
        }
        return recycled;
    }
}
