#include <stdio.h>
#include <stdlib.h>
int main()
{
    long *p,n,m,i,j,temp;
    while(1)
    {
        scanf("%ld%ld",&n,&m);
        if(m==0&&n==0)
            break;
        p=(long*)calloc(n,sizeof(long));
        for(i=0;i<n;i++)
            scanf("%ld",&p[i]);
        for(i=0;i<n-1;i++)
            for(j=0;j<n-1-i;j++)
                if(p[j]>p[j+1])
                {
                    temp=p[j];
                    p[j]=p[j+1];
                    p[j+1]=temp;
                }
        for(i=0;i<n;i+=m)
            printf("%ld ",p[i]);
        printf("\n");
        free(p);
    }
    system("pause");
    return 0;
}