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.File;
import java.io.PrintWriter;
import java.util.Scanner;
/**

 */
public class RecycleNumber{

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) throws Exception{

        // Read file
        Scanner inFile = new Scanner(new File("file.in"));
        PrintWriter outFile = new PrintWriter(new File("out.file"));

        int caseN =inFile.nextInt();


        // TODO code application logic here
        for(int i = 1; i<caseN+1; i++){

            int A = inFile.nextInt();
            int B = inFile.nextInt();
            int count =0;


            //Read the total point
            for(int n = A; n<=B; n++){

            	//check all the recycle of n to see whether it satisfies the condition
            	String nS = Integer.toString(n);
            	int l = nS.length();
            	int flag = 0 ;  //check whether m repeat
            	int[] c = new int[l];
            	for (int k=0; k<l;k++) c[k]=-1;

            	if (l==1) break;
            	for(int k=0;k<l;k++){
            		String mS=nS.substring(k+1,l)+nS.substring(0,k+1);
            		int m = Integer.parseInt(mS);
            		if (k==0) c[k]=m;
            		else{
            			for(int s = 0; s<k;s++){
            				if(m==c[s]) flag=1;
            			}
            		}
            		if (m >n && m<=B && flag==0){
            			count++;
            			//System.out.println(count);
            			//System.out.println("("+n+","+m+")");
            			c[k]=m;
            			flag=0;
            		}

            	}


            }

           // System.out.println("Case #"+i+": "+count);
            outFile.println("Case #"+i+": "+count);
        }

        //close the file
         inFile.close();
         outFile.close();



       }
}
