import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Arrays;
import java.util.StringTokenizer;

public class didi{
    static StringBuilder sb = new StringBuilder();
    static int n, m;
    static boolean[] visit;
    static int[] arr;


    public static void main(String[] args) throws IOException {
        BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
        StringTokenizer st = new StringTokenizer(br.readLine());
        n = Integer.parseInt(st.nextToken());
        m = Integer.parseInt(st.nextToken());

        visit = new boolean[n];
        arr = new int[m];
        dfs(0,0);
        System.out.println(sb);
    }

    private static void dfs(int depth, int start) {
        if (depth == m) {
            System.out.println(" depth :"+depth+" start :"+start+" arr :"+ Arrays.toString(arr));

            for (int val : arr) {
                sb.append(val).append(" ");
            }
            sb.append("\n");
            return;
        }

        for (int i = start; i < n; i++) {
            System.out.println( "i :"+i+" depth :"+depth+" start :"+start+" arr :"+ Arrays.toString(arr)+" visited :"+Arrays.toString(visit));
            if (!visit[i]) {
                visit[i] = true;
                arr[depth] = i + 1;
                dfs(depth + 1, i+1);
                visit[i] = false;
            }
        }
    }
}