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);
		}

	}
}

/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */

/**
 *
 * @author ZAMAN
 */
import java.io.*;

public class test2 {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here
       
        int start;
        int end;
        try {
            BufferedReader a = new BufferedReader(new FileReader("C-large.in"));
            BufferedWriter b = new BufferedWriter(new FileWriter("C-large.out"));
            
            int lines = Integer.valueOf(a.readLine());
            for (int z = 1; z <= lines; z++) {
                 int pairs = 0;
                String ints[] = a.readLine().split(" ");
                start = Integer.parseInt(ints[0]);
                end = Integer.parseInt(ints[1]);
                b.append("Case #" + z + ": ");
                for (int i = start; i <= end; i++) {
                    String number = String.valueOf(i);
                    int length = number.length();
                    int newnums[] = new int[length - 1];
                    int count = 0;
                    if (length == 1) {
                        continue;
                    }
                    if (length == 2) {

                        char ch1 = number.charAt(0);
                        char ch2 = number.charAt(1);
                        if (ch1 < ch2) {
                            String num = "";
                            //interchange
                            num += ch2 + "" + ch1;
                            int newnum = Integer.parseInt(num);

                            if (newnum <= end) {
                                pairs++;
                            }
                        }
                    }
                    if (length > 2) {
                        
                        //mving one character to the front
                        String num = "";
                        char ch = number.charAt(length - 1);
                        num += ch;
                        num += number.substring(0, length - 1);
                        int newnum = Integer.parseInt(num);
                        if (newnum > i && newnum <= end) {
                            if (count == 0) {
                                newnums[count] = newnum;
                                count++;
                                pairs++;
                            } else {
                                int k = 0;
                                for (; k < length - 1; k++) {
                                    if (newnums[k] == newnum) {
                                        break;
                                    }
                                }
                                if (k == length - 1) {
                                    pairs++;
                                }
                            }

                        }

                        for (int j = length - 2; j > 0; j--) {
                            //moving more than once
                            String mov = number.substring(j, length);
                            num = "";
                            num += mov;
                            num += number.substring(0, j);
                            newnum = Integer.parseInt(num);

                            if (newnum > i && newnum <= end) {
                                if (count == 0) {
                                    newnums[count] = newnum;
                                    count++;
                                    pairs++;
                                } else {
                                    int k = 0;
                                    for (; k < length - 1; k++) {
                                        if (newnums[k] == newnum) {
                                            break;
                                        }
                                    }
                                    if (k == length - 1) {
                                        pairs++;
                                    }
                                }
                            }


                        }
                    }


                }
                
                b.append("" + pairs);
                b.newLine();
            }

            b.flush();
            a.close();
            b.close();

        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}
