#!/usr/bin/env node

const letters = 'qwertyuiopasdfghjklzxcvbnm1234567890'.split('');

let username = 'mib_';

function rando() {
  return letters[Math.floor(Math.random() * letters.length)];
}

for (let i = 0; i < 6; i++) {
  username += rando();
}

console.log(username)