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();
    }
}

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.IOException;


public class problem {

	public static void main(String[] args)  throws IOException{
		final String filein = "C:\\Users\\BYTE\\Downloads\\C-small-attempt0.in";
		//final String filein = "C:\\Users\\byte\\Downloads\\NewFolder\\C-small-attempt6.txt";
	    BufferedReader in = new BufferedReader(new FileReader(filein));
	    
	    
		int tests=Integer.parseInt(in.readLine());
		
		int a=0,b=0,num=0;
		
		for(int i=0;i<tests;i++)
		{
			String s1[]=in.readLine().split(" ");
						
			a=Integer.parseInt(s1[0]);
			b=Integer.parseInt(s1[1]);
			
			//char [] arr=s1[0].toCharArray(); 
			
			for(int j=a; j<b;j++)
			{
				char [] arr=Integer.toString(j).toCharArray();
				for(int k=arr.length-1;k>0;k--)
				{
					if(arr[k]== '0')
						continue;
					else
					{
						
						String s = new String(arr);
						int z= Integer.parseInt(s.substring(k,arr.length)+s.substring(0,k));
						if(z >= a && z<=b  && z!=j && !(z<j)  )
							num++;
					}
				}
				
			}
			
			System.out.println("Case #"+(i+1)+": "+num);
			num=0;
			
		}
	}

}
