int main()
{
	int m,n,i,j,counter=0;
	scanf("%d%d",&m,&n);
	for(i=m;i<=n;i++)
	{
		for(j=2;j<i;j++)
		{
			if(i%j==0)
				break;
		}
		if(j==i)
		{
			if(i>0&&i<10)
			{
				counter+=1;
				if(counter==1)
					printf("%d",i);
				else
					printf(",%d",i);
			}
			else if(i>=10&&i<=99)
			{
				if(i/10==i%10)
				{
					counter+=1;
					if(counter==1)
						printf("%d",i);
					else
						printf(",%d",i);
				}
			}
			else if(i>=100&&i<=999)
			{
				if(i/100==i%10)
				{
					counter+=1;
					if(counter==1)
						printf("%d",i);
					else
						printf(",%d",i);
				}
			}
			else if(i>=1000&&i<=9999)
			{
				if(i/1000==i%10&&(i%1000)/100==(i%100)/10)
				{
					counter+=1;
					if(counter==1)
						printf("%d",i);
					else
						printf(",%d",i);
				}
			}
			else if(i>=10000&&i<=99999)
			{
				if(i/10000==i%10&&(i%10000)/1000==(i%100)/10)
				{
					counter+=1;
					if(counter==1)
						printf("%d",i);
					else
						printf(",%d",i);
				}
			}
		}
	}
	if(counter==0)
		printf("no");
	return 0;
}

