выдает ошибку на 16 строке

package com.javarush.task.task07.task0720;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;



public class Solution {
    public static void main(String[] args) throws IOException {
        BufferedReader reader = new BufferedReader(new InputStreamReader(System.in));


        ArrayList<String> list = new ArrayList<String>();

        int n = Integer.parseInt(reader.readLine());

        int m = Integer.parseInt(reader.readLine());
        for (int i = 0; i < n; i++){
            list.add(reader.readLine());
        }
        for (int i = 0; i < m; i++){
            String s = list.get(i);
            list.remove(i);
            list.add(s);
            i--;
            m--;
        }
        for (String ss :list){
            System.out.println(ss);
        }
}
}