#include <iostream>
using namespace std;
 
int main() {
	ios::sync_with_stdio(0);
	long long int i,j,T,N,g,r;
	cin>>T;
	while(T--){
		cin>>N;
	    r=N%26;
	    g=(N-r)/26;
	    char a[27]={'a','b','c','d','e','f','g','h','i','j','k','l','m','n','o','p','q','r','s','t','u','v','w','x','y','z','\0'};
	    for(i=0;i<g;i++){
	    	for(j=0;j<26;j++){
	    		cout<<a[j];
			}
	    }
	    for(i=0;i<r;i++){
	    	cout<<a[i];
	    }
	    cout<<endl;
	}
	return 0;
} 

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MgoxNQo1NA==

2
15
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