function processData(input) {

  const factoradic = (num) => {
    const factoradics = [];
    let i = 1;

    while (num !== 0) {
      factoradics.unshift(Math.floor(num % i));
      num = Math.floor(num / i);
      i++;
    }
    return factoradics;
  };

  const permutations = (str, n) => {
    let char;
    let result = [];
    let facNumber = factoradic(n - 1);
    let tempString = str.split('');

    while (facNumber.length < str.length) {
      facNumber.unshift(0);
    }

    for (let i = 0; i < str.length; i++) {
      char = tempString.splice(facNumber[i], 1);
      result.push(char);
    }

    return result.join('');
  };

  let str = 'abcdefghijklm';
  let inputString = input.split('\n');
  let currentLine = 0;
  const readLine = () => inputString[currentLine++];

  let t = Number(readLine().trim());

  for (let tItr = 0; tItr < t; tItr++) {

    let n = Number(readLine().trim());

    console.log(permutations(str, n));
  }
}