import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStreamReader;
import java.io.OutputStreamWriter;

public class Recycled {
	public static void main(String[] args) throws Exception{
		String inputFile = "C-small-attempt0.in";
		
		BufferedReader input = new BufferedReader(new InputStreamReader(new FileInputStream(inputFile)));
		BufferedWriter output = new BufferedWriter(new OutputStreamWriter(new FileOutputStream("output")));
		long num_cases = Long.parseLong(input.readLine());
		int current_case = 0;
		
		while (current_case < num_cases){
			current_case++;
			
			String[] fields = input.readLine().split(" ");
			int A = Integer.parseInt(fields[0]);
			int B = Integer.parseInt(fields[1]);
			int total = 0;
			
			for (int n = A; n < B; n++){
				for (int m = n+1; m <= B; m++){
					if (isRecycled(n,m)) total++;
				}
			}
			
			System.out.println("Case #" + current_case + ": " + total);
			output.write("Case #" + current_case + ": " + total + "\n");
		}
		output.close();
	}

	private static boolean isRecycled(int n, int m) {
		String sn = ""+n;
		String sm = ""+m;
		if (sn.length() != sm.length()) return false;
		int totaln = 0, totalm = 0;
		for (int i = 0; i < sn.length(); i++){
			totaln += sn.charAt(i);
			totalm += sm.charAt(i);
		}
		if (totaln != totalm) return false;
		for (int i = 0; i < sn.length()-1; i++){
			sm = sm.charAt(sm.length() - 1) + sm.substring(0, sm.length() - 1);
			if (sm.equals(sn)) return true;
		}
		return false;
	}
}


/**
 *
 * @author Prasun
 */
import java.io.*;
public class C2012 {
    public static void main(String prsn[]) throws Exception
    {
        BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
        int T,A,B, i,j, cnt=0,div, m, qsn, rem, CNo=1, n;
        T=Integer.parseInt(br.readLine());
        String[] line=null;
        //System.out.println(" " + Mul(T,1000));
        while(T>0)
        {
            line=br.readLine().split(" ");
            A=Integer.parseInt(line[0]);
            B=Integer.parseInt(line[1]);
            cnt=0;
            OUTER:
            for(i=A;i<B;i++)
            {
                for(j=i+1;j<=B;j++)
                {
                    n=length(i);
                    if(n<length(j))
                    {
                        continue OUTER;
                    }


                    div=(int)Math.pow(10,n-1);
                    m=i;
                    do
                    {
                        qsn=m/div;
                        rem=m%div;
                        if(rem==0)break;
                        m=(rem*10 + qsn); if(Mul(rem,div)>0) m=m* 10 * Mul(rem,div);
                        if(m==j)
                        {
                            cnt++;
                            //System.out.println( i + " : " + j + " == " + m);
                            break;
                        }
                        n--;
                    }while(n>0);
                }
            }
            System.out.println("Case #" + CNo + ": " + cnt);
            CNo++;
            T--;
        }
    }
    public static int length(int x)
    {
        int l=0;
        while(x>0)
        {
            x=x/10;
            l++;
        }
        return l;
    }
    public static int Mul(int x, int div)
    {
        int cnt=-1;
        while(div!=0 && (x/div) <= 0)
        {
            cnt++;
            div=div/10;
        }
        return cnt;
    }
}
