#include<iostream>
#include<cstdio>
#include<cstring>
#include<cstdlib>
#include<algorithm>
#include<string>
#include<map>
using namespace std;
int m,k;
string s;
map<string,int> xh;

int main()
{
	freopen("asm_talk.in","r",stdin);
	freopen("asm_talk.out","w",stdout);
	cin>>m;
	for(int i=1;i<=m;i++)
	{
		cin>>k>>s;
		if(k==1)
			xh[s]++;
		if(k==2)
		{
			int t=s.find('*');
			if(t==-1)
			{
				map<string,int>::iterator it;
				it=xh.find(s);
				if(it==xh.end())
					printf("NO\n");
				else
					printf("YES\n");
			}
			else
			{
				bool flag=0;
				for(int k='a';k<='z';k++)
				{
					s[t]=k;
					map<string,int>::iterator it;
					it=xh.find(s);
					if(it!=xh.end())
					{
						printf("YES\n");
						flag=1;
						break;	
					}	
				}
				if(!flag)
					printf("NO\n");
			}
		}
	}
	fclose(stdin);
	fclose(stdout);
	return 0;
}