#include<iostream>
#include<cstdio>
using namespace std;
int main()
{
    int N,length,a[100],b[100],i,j,k;
    char temp;
    cin>>N;
    while(N--)
    {
        cin>>length;
        for(i=0;i<length;i++)
        {
        
            cin>>temp;
            if(temp==‘A‘) a[i]=1;
            else if(temp==‘C‘)a[i]=2;
            else if(temp==‘G‘)a[i]=3;
            else if(temp==‘T‘)a[i]=4;
        }
        for(j=0;j<length;j++)
        {
        
            cin>>temp;
            if(temp==‘U‘) b[j]=1;
            else if(temp==‘G‘)b[j]=2;
            else if(temp==‘C‘)b[j]=3;
            else if(temp==‘A‘)b[j]=4;
        }
        for(k=0;k<length;k++)
        {
            if(a[k]!=b[k]) break;
        }
        if(k<length) cout<<"NO"<<endl;
        else if(k==length) cout<<"YES"<<endl;
    }
    return 0;
}