#include
int main(){
int m,n;
scanf("%d%d",&m,&n);
int i,j,count,flag;
for(i=m;i<=n;i++){
flag=1;
for(j=2;j<=i/2+1;j++){
if(i%j==0)flag=0;
continue;}
if(flag){
printf("%d ",i);
count++;
if(count%10==0)printf("\n");}}
if(count%10!=0)printf("\n");
return 0;
}