#include<bits/stdc++.h>

using namespace std;

#define debug cout<<"Debug\n";
#define en '\n'
#define all(x) x.begin() , x.end()

#define ll long long

#define pi acos(-1.0)
#define mod 1000000007

#define _fastio_  ios_base:: sync_with_stdio(false); cin.tie(0); cout.tie(0);




int main(){
    _fastio_
    ll t;
    
    string s="";
    for(ll i=0;i<=25;i++){
        char ch='a'+i;
        s+=ch;
    }

    ll n;
    cin>>n;

    map<string,string>mp;

    while(n--){
        string a;
        cin>>a;


        string b="";
        ll i=a.length()-2;
        for(;i>=0;i--){
            if(a[i]=='.') break;
        }

        if(i>=0){
            ll j=a.length()-2;
            for(;j>i;j--){
                if(a[j]!='0') break;
            }

            if(j>i){
                for(ll k=j;k>=0;k--){
                    b+=a[k];
                }
            }
            else{
                for(ll k=j-1;k>=0;k--){
                    b+=a[k];
                }
            }

        }
        else{
            for(ll j=a.length()-2;j>=0;j--) b+=a[j];
        }
        reverse(all(b));

        if(b=="15") cout<<"nebuchadnezzar"<<en;
        else if(b=="12") cout<<"Balthazar"<<en;
        else if(b=="0.75") cout<<"standard"<<en;
        else{
            if(mp[b].length()>=1) cout<<mp[b]<<en;
            else{
                bool v=next_permutation(all(s));
                mp[b]=s;
                cout<<s<<en;
            }
        }
    }



    return 0;
}