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);
		}

	}
}

import java.io.BufferedWriter;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.Writer;
import java.util.HashSet;
import java.util.Scanner;
import java.util.Set;

public class RecycledNumbers {

    private String mInputFileName;
    private String mOutputFileName;
    
    private long A;
    private long B;
    private Set<String> mPairSet = new HashSet<String>();
    
    public RecycledNumbers(String inputFileName, String outputFileName) {
        mInputFileName = inputFileName;
        mOutputFileName = outputFileName;
    }

    public void solve() {
        long start = System.currentTimeMillis();
        Scanner scanner = null;
        try {
            scanner = new Scanner(new FileReader(mInputFileName));
            Writer output = new BufferedWriter(new FileWriter(mOutputFileName));
            int cases = scanner.nextInt();
            for (int i = 1; i <= cases; i++) {
                mPairSet.clear();
                A = scanner.nextLong();
                B = scanner.nextLong();
                System.out.println("CASE: " + i + " / " + cases);
                if (i > 1) output.write("\n");
                output.write("Case #" + i + ": ");
                output.write(getAnswer());
            }
            output.close();
        } catch (Exception e) {
            e.printStackTrace();
        } finally {
            if (scanner != null) scanner.close();
        }
        System.out.println("TIME: " + (System.currentTimeMillis() - start));
    }

    private String getAnswer() {
        int res = 0;
        for (long i = A; i <= B; i++) {
            res += getNumPairs(i);
        }
        //System.out.println(res);
        return "" + res;
    }
    
    private int getNumPairs(long num) {
        int res = 0;
        String numStr = "" + num;
        int len = numStr.length();
        if (len > 1) {
            for (int i = 1; i < len; i++) {
                String newStr = numStr.substring(i) + numStr.substring(0, i);
                long newNum = Long.parseLong(newStr);
                if (newNum > num && newNum <= B) {
                    String pair = num + " " + newNum;
                    if (!mPairSet.contains(pair)) {
                        mPairSet.add(pair);
                        res++;
                    }
                }
            }
        }
        return res;
    }

    public static void main(String[] args) {
        String fileName = "test";
        String extension = ".txt";
        String outputSuffix = "_output";
        new RecycledNumbers(fileName + extension, 
                fileName + outputSuffix + extension).solve();
    }

}
