#include <iostream>
#include <stack>
#include <string>
#include <algorithm>

using namespace std;

const string open("({["), close(")}]");
stack<int> confirm;

bool check(string str)
{
    for(int i = 0 ; i < str.size(); i++)
    {   
        if(open.find(str[i]) != -1)
        {           
            confirm.push(open.find(str[i]));
        }
        else
        {
            if(confirm.empty())
                return false;
            if(str[i] != close[confirm.top()])
                return false;
            confirm.pop();
        }       
    }
    return confirm.empty();
}

int main()
{
    int _case;
    cin>>_case;
    string str;

    for(int i  = 0 ; i < _case; i++)
    {
        cin>>str;
        if(check(str))
            cout<<"YES"<<endl;
        else
            cout<<"NO"<<endl;
    }
    return 0;
}