Erelong Leha was bored by calculating of the greatest common divisor of two factorials. Therefore he decided to solve some crosswords. It's well known that it is a very interesting occupation though it can be very difficult from time to time. In the course of solving one of the crosswords, Leha had to solve a simple task. You are able to do it too, aren't you?

Leha has two strings s and t. The hacker wants to change the string s at such way, that it can be found in t as a substring. All the changes should be the following: Leha chooses one position in the string s and replaces the symbol in this position with the question mark "?". The hacker is sure that the question mark in comparison can play the role of an arbitrary symbol. For example, if he gets string s="ab?b" as a result, it will appear in t="aabrbb" as a substring.

Guaranteed that the length of the string s doesn't exceed the length of the string t. Help the hacker to replace in s as few symbols as possible so that the result of the replacements can be found in t as a substring. The symbol "?" should be considered equal to any other symbol.

Input

The first line contains two integers n and m (1 ≤ n ≤ m ≤ 1000) — the length of the string s and the length of the string t correspondingly.

The second line contains n lowercase English letters — string s.

The third line contains m lowercase English letters — string t.

Output

In the first line print single integer k — the minimal number of symbols that need to be replaced.

In the second line print k distinct integers denoting the positions of symbols in the string s which need to be replaced. Print the positions in any order. If there are several solutions print any of them. The numbering of the positions begins from one.

Examples

Input

3 5
abc
xaybz


Output

2
2 3 


Input

4 10
abcd
ebceabazcd


Output

1
2 
import java.io.BufferedReader;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.OutputStream;
import java.io.PrintWriter;
import java.util.*;

public class Main {

    public static void main(String[] args) {
        InputStream inputStream = System.in;
        OutputStream outputStream = System.out;
        Scanner in = new Scanner(inputStream);
        PrintWriter out = new PrintWriter(outputStream);
        Task solver = new Task();
        solver.solve(in, out);
        out.close();
    }
}

class Task {

    //    static int MAX = 1000001;
//    List<List<Integer>> g = new ArrayList<>();
//    int n;
//    char[] s;

    public void solve(Scanner in, PrintWriter out) {
        int n = in.nextInt();
        int k = in.nextInt();
        String s = in.next();
        String t = in.next();
        int min = 10000;
        List<Integer> res = new ArrayList<>();
        for (int i = 0; i + n <= k; i++) {
            int diff = 0;
            List<Integer> list = new ArrayList<>();
            for (int j = 0; j < n; j++) {
                if (s.charAt(j) != t.charAt(j + i)) {
                    diff++;
                    list.add(j + 1);
                }
            }
            if (diff < min) {
                min = diff;
                res = list;
            }
        }
        System.out.println(res.size());
        for (Integer re : res) {
            System.out.print(re + " ");
        }
    }


}

class Utils {

    public static int binarySearch(int[] a, int key) {
        int s = 0;
        int f = a.length;
        while (f > s) {
            int mid = (s + f) / 2;
            if (a[mid] > key) {
                f = mid - 1;
            } else if (a[mid] <= key) {
                s = mid + 1;
            }
        }
        return -1;
    }

    public static long gcd(long a, long b) {
        return b != 0 ? gcd(b, a % b) : a;
    }

    public static long lcm(long a, long b) {
        return a / gcd(a, b) * b;
    }

    static List<Integer> prime(int number) {
        List<Integer> a = new ArrayList<>();
        for (int i = 2; i * i <= number; i++) {
            if (number % i == 0) {
                a.add(i);
                number /= i;
                i = 1;
            }
        }
        a.add(number);
        return a;
    }
}

class Pair<T, U> {
    public T a;
    public U b;

    public Pair(T a, U b) {
        this.a = a;
        this.b = b;
    }

    @Override
    public boolean equals(Object obj) {
        Pair<T, U> p = (Pair<T, U>) obj;
        return p.a.equals(a) || p.a.equals(b);
    }

    @Override
    public int hashCode() {
        return 42;
    }
}


class Vect {
    public int a;
    public int b;

    public Vect(int a, int b) {
        this.a = a;
        this.b = b;
    }
}

class Tri {
    public int a;
    public int b;
    public int c;

    public Tri(int a, int b, int c) {
        this.a = a;
        this.b = b;
        this.c = c;
    }
}

class Triple<T, U, P> {
    public T a;
    public U b;
    public P c;

    public Triple(T a, U b, P c) {
        this.a = a;
        this.b = b;
        this.c = c;
    }
}


class Scanner {
    BufferedReader in;
    StringTokenizer tok;

    public Scanner(InputStream in) {
        this.in = new BufferedReader(new InputStreamReader(in));
        tok = new StringTokenizer("");
    }

    private String tryReadNextLine() {
        try {
            return in.readLine();
        } catch (Exception e) {
            throw new InputMismatchException();
        }
    }

    public String nextToken() {
        while (!tok.hasMoreTokens()) {
            tok = new StringTokenizer(next());
        }
        return tok.nextToken();
    }

    public String next() {
        String newLine = tryReadNextLine();
        if (newLine == null)
            throw new InputMismatchException();
        return newLine;
    }

    public int nextInt() {
        return Integer.parseInt(nextToken());
    }

    public long nextLong() {
        return Long.parseLong(nextToken());
    }
}