Print DNA

//15 EXERCISE: FUNCTIONS/More Exercise/05. Print DNA.js
printDna0(14)

function printDna0(n) {
  'use strict'

  const seq = 'ATCGTTAGGG'
  const temp = ['**AB**', '*A--B*', 'A----B', '*A--B*']

  let i = 0
  let j = 0
  let k = 0
  while (j !== n) {
    let ch1 = seq[i]
    let ch2 = seq[i + 1]
    let str = temp[k].replace('A', ch1)
    str = str.replace('B', ch2)
    console.log(str)
    j++
    i += 2
    if (i === 10)
      i = 0
    k++
    if (k === 4)
      k = 0
  }
}