from math import factorial as fact

def swapPos(x, y):
    for i in range(y , x , -1):
        s[i],s[i-1] = s[i-1], s[i]
def findFact(x, k, pos = 0):
    if (k == 0):
        return
    swapPos(pos, (x - 1) // fact(k) + pos)
    findFact( (x - 1)  % fact(k) + 1, k - 1, pos + 1)
for _ in range(int(input())):
    n = int(input())
    
    s = list('abcdefghijklm')
    k = len(s) - 1

    findFact(n, k)
    print(''.join(s))

#include<bits/stdc++.h>

using namespace std;

int main(){
    int t;
    cin>>t;
    while(t--){
          long long int n;
          cin>>n;n--;
          string fact = "";
          int i=1;
          while(n){
              fact = to_string(n%i) + fact;
              n/=i;
              i++;
          }
        fact = string(13-fact.length(),'0') + fact;
        //cout<<fact<<"\n";
        string res = "abcdefghijklm",result;
        for(int i=0;i<fact.length();i++){
            int index = (fact[i]-'0');
            result+=res[index];
            res.erase(index, 1);
        }
        cout<<result<<"\n";
    }
    return 0;
}

#Simple Ruby solution

word = 'abcdefghijklm'

def factorial(n)
    return n <= 1 ? 1 : n*factorial(n-1)
end

t = gets.strip.to_i

for a0 in (0..t-1)
    n = gets.strip.to_i 
    letters = word.split(//)
    permutation = []
    letter_count = letters.size
    k = factorial(letter_count)
    letter_count.downto(1) { |num_letters| 
        k /=  num_letters
        offset = (n-1)/k
        permutation << letters[offset]
        letters.delete_at(offset)
        n -= (k*offset)
    }
    puts permutation.join
end

string = "abcdefghijklm"

def find_fac(no):
    i = 1
    while no!=0:
        fac[13 - i] = no % i
        no = no // i
        i += 1
        
    return fac

def find_string(fac):
    arr = list(string)
    result = ""
    
    for i in range(len(fac)):
        result += arr.pop(fac[i])
    
    return result
    
t = int(input())

for i in range(t):
    fac = [0] * 13
    no = int(input())
    no = no - 1
    fac = find_fac(no)
    # print(fac)
    result = find_string(fac)
    print(result)