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.BufferedWriter;
import java.io.DataInputStream;
import java.io.FileInputStream;
import java.io.FileWriter;
import java.io.InputStreamReader;


public class rec2 {
	public static void main(String args[]) throws Exception{
		FileInputStream fs = new FileInputStream("input2.txt");
	    DataInputStream in = new DataInputStream(fs);
	    BufferedReader br=new BufferedReader(new InputStreamReader(in));
	    FileWriter fstream = new FileWriter("output3.txt");
		BufferedWriter out = new BufferedWriter(fstream);
		int T=Integer.parseInt(br.readLine());
	    for(int i=0;i<T;i++){
	    	int temp=0;
	    	long[] found=new long[10000000];
	    	int count=0;
	    	String str=br.readLine();
	    	String str1[]=str.split(" ");
	    	int nod=str1[1].length();
	    	int A=Integer.parseInt(str1[0]);
	    	int B=Integer.parseInt(str1[1]);
	    	for(int x=A;x<=B;x++){
	    		if(found[x]!=1){
	    			int t=1;
	    			int a=x;
	    			found[a]=1;
	    			int n1=nod-1;
	    			for(int k=0;k<n1;k++){
	    				int b=((a%10)*((int)Math.pow(10,n1)))+(a/10);
	    				if(b!=x && found[b]!=1 && b<=B && A<=b){
	    					t++;
	    					found[b]=1;
	    				}
	    				a=b;	    			
	    			}
	    			count=count+((t*(t-1))/2);
	    		}
	    	}
	    	out.write("Case #"+(i+1)+": "+count);
			out.newLine();
	    }
	    out.close();
		br.close();
	   }
}