#include<stdio.h>
void main()
{
int a,b,i,p,k,t,n;
scanf("%d",&n);
for(t=1;t<=n;t++)
{
scanf("%d%d",&a,&b);
for(p=a;p<=b;p++)
{
for(i=1,k=0;i<=p;i++)
{
if(p%i==0)
k++;
}
if(k==2)
printf("%d ",p);
}
printf("\n");
}
}
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