#include<stdio.h>
int main()
{
int i,n,c,num,a[1000],d,j;
while(scanf("%d%d",&n,&c)==2)
{
d=0;
a[0]=1;
num=1;
while(num<=n)
{
i=2;
while(i<=num)
{ if(num%i==0)
break;
i++; }
if(i==num)
{
d++;
a[d]=num;
}
num++;
}
if((c*2)>(d+1))
{
printf("%d %d:",n,c);
for(j=0;j<=d;j++)
printf(" %d",a[j]);
}
else
{
printf("%d %d:",n,c);
for(j=d/2+1-c;j<=d/2+c-1;j++)
printf(" %d",a[j]);
if(d%2==1)
printf(" %d",a[d/2+c]);
}
printf("\n\n");
}
}
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