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

public class C {

    void solve() throws IOException {
        in("C-large.in"); out("C-large.out");

        long tm = System.currentTimeMillis();
        boolean[] mask = new boolean[2000000];
        int[] r = new int[10];
        int t = readInt();
        for (int cs = 1; cs <= t; ++cs) {
            int a = readInt();
            int b = readInt();
            int ans = 0;
            for (int m = a + 1; m <= b; ++m) {
                char[] d = String.valueOf(m).toCharArray();
                int c = 0;
                for (int i = 1; i < d.length; ++i) {
                    if (d[i] != '0' && d[i] <= d[0]) {
                        int n = 0;
                        for (int j = 0; j < d.length; ++j) {
                            int jj = i + j;
                            if (jj >= d.length) jj -= d.length;
                            n = n * 10 + (d[jj] - '0');
                        }
                        if (n >= a && n < m && !mask[n]) {
                            ++ans;
                            mask[n] = true;
                            r[c++] = n;
                        }
                    }
                }
                for (int i = 0; i < c; ++i) {
                    mask[r[i]] = false;
                }
            }
            println("Case #" + cs + ": " + ans);
            //System.out.println(cs);
        }
        System.out.println("time: " + (System.currentTimeMillis() - tm));
        exit();
    }

    void in(String name) throws IOException {
        if (name.equals("__std")) {
            in = new BufferedReader(new InputStreamReader(System.in));
        } else {
            in = new BufferedReader(new FileReader(name));
        }
    }

    void out(String name) throws IOException {
        if (name.equals("__std")) {
            out = new PrintWriter(System.out);
        } else {
            out = new PrintWriter(name);
        }
    }

    void exit() {
        out.close();
        System.exit(0);
    }

    int readInt() throws IOException {
        return Integer.parseInt(readToken());
    }

    long readLong() throws IOException {
        return Long.parseLong(readToken());
    }

    double readDouble() throws IOException {
        return Double.parseDouble(readToken());
    }

    String readLine() throws IOException {
        st = null;
        return in.readLine();
    }

    String readToken() throws IOException {
        while (st == null || !st.hasMoreTokens()) {
            st = new StringTokenizer(in.readLine());
        }
        return st.nextToken();
    }

    boolean eof() throws IOException {
        return !in.ready();
    }

    void print(String format, Object ... args) {
        out.println(new Formatter(Locale.US).format(format, args));
    }

    void println(String format, Object ... args) {
        out.println(new Formatter(Locale.US).format(format, args));
    }

    void print(Object value) {
        out.print(value);
    }

    void println(Object value) {
        out.println(value);
    }

    void println() {
        out.println();
    }

    StringTokenizer st;

    BufferedReader in;
    PrintWriter out;

    public static void main(String[] args) throws IOException {
        new C().solve();
    }
}

import java.util.Arrays;
import java.util.HashSet;
import java.util.Scanner;


public class Solution {
	public static void main(String[] args){
		Scanner scan = new Scanner(System.in);
	    int T = scan.nextInt();
	    int[] counts = new int[T];
	    int max =2000001;
	    boolean[] used = new boolean[max];
	    for(int i=0;i<T;i++){
	    	int A = scan.nextInt();
	    	int B = scan.nextInt();
	    	counts[i]=count(A,B,used);	    	
	    }	
	    
	    for(int i=0;i<T;i++){
			System.out.println("Case #"+(i+1)+": "+counts[i]);
		}
	}
	
	public static int count(int A,int B,boolean[] used){
		int result=0;
		
		int num=0;
		int temp=A;
		
		int total=1;
		
		while(temp>0){
			temp=temp/10;
			num++;
			total*=10;
		}
		
		
		HashSet<Integer> set = new HashSet<Integer>();
		int rotato=0;
		int size =0;
		for(int i=A;i<=B;i++){
			if(!used[i]){
				set.clear();
				set.add(i);
				temp=i;
				int exp =1;
				
				for(int j=1;j<num;j++){
					exp*=10;
					rotato = (i%exp)*(total/exp)+i/exp;
				
					if(rotato>=A && rotato<=B){
						set.add(rotato);
						used[rotato]=true;
					}					
				}
				//System.out.println(size);
				size = set.size();
				if(size>1){
					result+=size*(size-1)/2;
				}				
			}
		}
		Arrays.fill(used, A,B,false);
		
		return result;
		
	}	
	
}
